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  • What parts of this book are outdated? "Design of the UNIX Operating System" by Maurice Bach, 1986

    - by blee
    I learned programming on the job via high-level languages. I'm trying to gain a better understanding of the lower-level workings of computing and picked up "Design of the UNIX Operating System" by Maurice Bach. What do I need to know in terms of which topics in this book may not be relevant to understanding Linux nuts and bolts? Is there a newer book or Linux-specific book that I should read instead? I really like the clarity of this particular book, though.

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  • More on Map Testing

    - by Michael Stephenson
    I have been chatting with Maurice den Heijer recently about his codeplex project for the BizTalk Map Testing Framework (http://mtf.codeplex.com/). Some of you may remember the article I did for BizTalk 2009 and 2006 about how to test maps but with Maurice's project he is effectively looking at how to improve productivity and quality by building some useful testing features within the framework to simplify the process of testing maps. As part of our discussion we realized that we both had slightly different approaches to how we validate the output from the map. Put simple Maurice does some xpath validation of the data in various nodes where as my approach for most standard cases is to use serialization to allow you to validate the output using normal MSTest assertions. I'm not really going to go into the pro's and con's of each approach because I think there is a place for both and also I'm sure others have various approaches which work too. What would be great is for the map testing framework to provide support for different ways of testing which can cover everything from simple cases to some very specialized scenarios. So as agreed with Maurice I have done the sample which I will talk about in the rest of this article to show how we can use the serialization approach to create and compare the input and output from a map in normal development testing. Prerequisites One of the common patterns I usually implement when developing BizTalk solutions is to use xsd.exe to create .net classes for most of the schemas used within the solution. In the testing pattern I will take advantage of these .net classes. The Map In this sample the map we will use is very simple and just concatenates some data from the input message to the output message. Hopefully the below picture illustrates this well. The Test In the test I'm basically taking the following actions: Use the .net class generated from the schema to create an input message for the map Serialize the input object to a file Run the map from .net using the standard BizTalk test method which was generated for running the map Deserialize the output file from the map execution to a .net class representing the output schema Use MsTest assertions to validate things about the output message The below picture shows this: As you can see the code for this is pretty simple and it's all strongly typed which means changes to my schema which can affect the tests can be easily picked up as compilation errors. I can then chose to have one test which validates most of the output from the map, or to have many specific tests covering individual scenarios within the map. Summary Hopefully this post illustrates a powerful yet simple way of effectively testing many BizTalk mapping scenarios. I will probably have more conversations with Maurice about these approaches and perhaps some of the above will be included in the mapping test framework.   The sample can be downloaded from here: http://cid-983a58358c675769.office.live.com/self.aspx/Blog%20Samples/More%20Map%20Testing/MapTestSample.zip

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  • Security Alert for CVE-2011-5035 Updated

    - by Eric P. Maurice
    Hi, this is Eric Maurice again.  Oracle has just updated the Security Alert for CVE-2011-5035 to announce the availability of additional fixes for products that were affected by this vulnerability through their use of the WebLogic Server and Oracle Container for J2EE components.  As explained in a previous blog entry, a number of programming language implementations and web servers were found vulnerable to hash table collision attacks.  This vulnerability is typically remotely exploitable without authentication, i.e., it may be exploited over a network without the need for a username and password.  If successfully exploited, malicious attackers can use this vulnerability to create denial of service conditions against the targeted system. A complete list of affected products and their versions, as well as instructions on how to obtain the fixes, are listed on the Security Alert Advisory.  Oracle highly recommends that customers apply these fixes as soon as possible.

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  • Security Alert For CVE-2010-4476 Released

    - by eric.maurice
    Hello, this is Eric Maurice again. Oracle just released a Security Alert with a fix for the vulnerability CVE-2010-4476, which affects Oracle Java SE and Oracle Java For Business. This vulnerability is present in Java running on servers as well as standalone Java desktop applications. Its successful exploitation by a malicious attacker can result in a complete denial of service for the affected servers. While only recently publicly disclosed, a number of Internet sites have since then reproduced details about this vulnerability, including exploit codes, which may result in allowing a malicious attacker to create a denial of service condition against the targeted system. Oracle therefore strongly recommends that affected organizations apply this fix as soon as possible. Please note that a fix for this vulnerability will also be included in the upcoming Java Critical Patch Update (Java SE and Java for Business Critical Patch Update - February 2011), which will be released on February 15th 2011. Note that the impact of this vulnerability on desktops is minimal: the affected applications or applets running in Internet browsers for example, might stop responding and may need to be restarted; however the desktop itself will not be compromised (i.e. no compromise at the desktop OS level). Oracle therefore recommends that consumers use the Java auto-update mechanism to get this fix. This will prompt them to install the latest version of the Java Runtime Environment 6 update 24 or higher (JRE), which includes the fix for this vulnerability. JRE 6 update 24 will also be distributed with the Java SE and Java for Business Critical Patch Update - February 2011. For More Information: The Critical Patch Updates and Security Alerts page is located at http://www.oracle.com/technetwork/topics/security/alerts-086861.html The Advisory for Security Alert CVE-2010-4476 is located at http://www.oracle.com/technetwork/topics/security/alert-cve-2010-4476-305811.html More information on Oracle Software Security Assurance is located at http://www.oracle.com/us/support/assurance/index.html Consumers can go to http://www.java.com/en/download/installed.jsp to ensure that they have the latest version of Java running on their desktops. More information on Java Update is available at http://www.java.com/en/download/help/java_update.xml

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  • Security Alert for CVE-2010-0886 and CVE-2010-0887 Released

    - by eric.maurice
    Hi, this is Eric Maurice again! Oracle just released a Security Alert to announce the availability of fixes for two vulnerabilities (CVE-2010-0886 and CVE-2010-0887) affecting Oracle Java SE and Oracle Java For Business. Both vulnerabilities only affect Java when running in a 32-bit web browser. These vulnerabilities are not present in Java running on servers or standalone Java desktop applications and do not impact any Oracle server based software. The first vulnerability (CVE-2010-0886) affects the Java Deployment Toolkit (version 6 update 10 through 19) on Windows only. The second vulnerability (CVE-2010-0887) affects the Java Plug-in (version 6 update 18 and 19) on Windows, Solaris and Linux. Both vulnerabilities may allow an attacker to run commands on the user's system with the privileges of the user, whose system may have become compromised by visiting a malicious web site. Oracle rated the severity of both vulnerabilities with a CVSS Base Score of 10.0 because many Windows users grant themselves administrative privileges. However, on other platforms, or for Windows users with limited privileges, the CVSS Base Score is only 7.5, because a successful exploitation of these vulnerabilities cannot result in a full compromise of the affected system. Users can quickly determine if they are running vulnerable versions of Java by pointing their browser to http://www.java.com/en/download/help/testvm.xml. Java SE users can visit http://www.java.com and download the most recent release of Java SE to address these vulnerabilities. Because of the criticality of these vulnerabilities, and the publicity they received as a result of their disclosure before the availability of a fix, Oracle recommends that all customers and Java users update their Java installation to the most recent version (6 update 20). For More Information: The advisory for the Security Alert for CVE-2010-0886 and CVE-2010-0887 is located at http://www.oracle.com/technology/deploy/security/alerts/alert-cve-2010-0886.html

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  • June 2012 Critical Patch Update for Java SE Released

    - by Eric P. Maurice
    Hi, this is Eric Maurice. Oracle just released the June 2012 Critical Patch Update for Java SE.  This Critical Patch Update provides 14 new security fixes across Java SE products.  As discussed in previous blog entries, Critical Patch Updates for Java SE will, for the foreseeable future, continue to be released on a separate schedule than that of other Oracle products due to previous commitments made to Java customers.  12 of the 14 Java SE vulnerabilities fixed in this Critical Patch Update may be remotely exploitable without authentication.  6 of these vulnerabilities have a CVSS Base Score of 10.0.  In accordance with Oracle’s policies, these CVSS 10 scores represent instances where a user running a Java applet or Java Web Start application has administrator privileges (as is typical on Windows XP).  When the user does not run with administrator privileges (typical on the Solaris and Linux operating systems), the corresponding CVSS impact scores for Confidentiality, Integrity, and Availability for these vulnerabilities would be "Partial" instead of "Complete", thus lowering these CVSS Base Scores to 7.5. Due to the high severity of these vulnerabilities, Oracle recommends that customers obtain and apply these security fixes as soon as possible: Developers should download the latest release at http://www.oracle.com/technetwork/java/javase/downloads/index.html    Java users should download the latest release of JRE at http://java.com, and of course  Windows users can take advantage of the Java Automatic Update to get the latest release. In addition, Oracle recommends removing old an unused versions  of Java as the latest version is always the recommended version as it contains the most recent enhancements, and bug and security fixes.  For more information: •Instructions on removing older (and less secure) versions of Java can be found at http://java.com/en/download/faq/remove_olderversions.xml  •Users can verify that they’re running the most recent version of Java by visiting: http://java.com/en/download/installed.jsp   •The Advisory for the June 2012 Critical Patch Update for Java SE is located at http://www.oracle.com/technetwork/topics/security/javacpujun2012-1515912.html

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  • April 2010 Critical Patch Update Released

    - by eric.maurice
    Hi, this is Eric Maurice. Today Oracle released the April 2010 Critical Patch Update (CPUApr2010),the first one to include security fixes for Oracle Solaris. Today's Critical Patch Update (CPU) provides 47 new security fixes across the following product families: Oracle Database Server, Oracle Fusion Middleware, Oracle Collaboration Suite, Oracle E-Business Suite, Oracle PeopleSoft Enterprise, Oracle Life Sciences, Retail, and Communications Industry Suites, and Oracle Solaris. 28 of these 47 new vulnerabilities are remotely exploitable without authentication, but the criticality of the affected components and the severity of these vulnerabilities vary greatly. Customers should, as usual, refer to the Risk Matrices in the CPU Advisory to assess the relevance of these fixes for their environment (and the urgency with which to apply the fixes). 7 of the 47 new vulnerabilities affect various versions of Oracle Database Server. None of these 7 vulnerabilities are remotely exploitable without authentication. Furthermore, none of these fixes are applicable to client-only deployments. The most severe CVSS Base Score for the Database Server vulnerabilities is 7.1. As a reminder, information about Oracle's use of the CVSS 2.0 standard can be found in Note 394487.1 (My Oracle Support subscription required). Note that this Critical Patch Update includes fixes for vulnerabilities that were publicly disclosed by David Litchfield at the BlackHat DC Conference in early February (CVE-2010-0866 and CVE-2010-0867). 5 of the 47 new vulnerabilities affect various components of the Oracle Fusion Middleware product family. The highest CVSS Base Score for these vulnerabilities is 7.5. Note that the patches for Oracle WebLogic Server are cumulative and this Critical Patch Update therefore also includes a fix for a vulnerability (CVE-2010-0073) that was the subject of a Security Alert issued by Oracle on February 4, 2010. Customers, who have not applied the previously-released patch, should apply today's Critical Patch Update as soon as possible. As stated at the beginning of this blog, it is also noteworthy to highlight that this Critical Patch Update provides 16 new fixes for the Sun product line. With the recent close of the Sun acquisition both security organizations have worked diligently to align Sun's previous security practices with Oracle's. Java users know that Oracle released a Critical Patch Update for Java SE and Java For Business earlier this month (in accordance with the Java patching schedule previously published by Sun Microsystems). Please note that for the first time, the Java advisories included CVSS Scores to help assess the severity of the new vulnerabilities fixed with the advisory. The rapid inclusion of the Solaris product lines in the Critical Patch Update and the extension of Oracle Software Security Assurance to Sun technologies are evidence of the flexibility of Oracle's security assurance programs. These should also result in tangible security benefits for the users of the Oracle hardware and software stack (such as a predictable patching schedule for all Oracle products).

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  • February 2011 Java SE and Java for Business Critical Patch Update Released

    - by eric.maurice
    Hello, this is Eric Maurice again. Oracle released the February 2011 Critical Patch Update for Java SE and Java for Business today. As discussed in a previous blog entry, Oracle currently maintains a separate Critical Patch Update schedule for Java SE and Java for Business because of commitments made prior to the Oracle acquisition in regards to the timing for the publication of Java fixes. Today's Java Critical Patch Update includes fixes for 21 vulnerabilities. The most severe CVSS Base Score for vulnerabilities fixed in this CPU is 10.0, and this Base Score affects 8 vulnerabilities. Out of these 21 vulnerabilities, 13 affect Java client deployments. 12 of these 13 vulnerabilities can be exploited through Untrusted Java Web Start applications and Untrusted Java Applets, which run in the Java sandbox with limited privileges. One of these 13 vulnerabilities can be exploited by running a standalone application. In addition, one of the client vulnerability affects Java Update, a Windows-specific component. 3 of the 21 vulnerabilities affect client and server deployments. These vulnerabilities can be exploited through Untrusted Java Web Start applications and Untrusted Java Applets, as well as be exploited by supplying malicious data to APIs in the specified components, such as, for example, through a web service. 3 vulnerabilities affect Java server deployments only. These vulnerabilities can be exploited by supplying malicious data to APIs in the specified Java components. Note that one of these vulnerabilities (CVE-2010-4476) was the subject of a Security Alert released on February 8th. Finally, one of these vulnerabilities is specific to Java DB, a component in the Java JDK, but not included in the Java Runtime Environment (JRE). As usual, because of the severity of the vulnerabilities fixed in this Critical Patch Update, Oracle recommends that Java customers apply it as soon as possible. The Critical Patch Advisory provides more details about the vulnerabilities addressed in the Critical Patch Update as well as instructions on how to install the fixes and where to get them. Home users should use the Java auto-update mechanism to install the latest version of the Java Runtime Environment 6 update 24 or higher (JRE), which includes the fix for this vulnerability. For More Information: The Critical Patch Updates and Security Alerts page is located at http://www.oracle.com/technetwork/topics/security/alerts-086861.html More information on Oracle Software Security Assurance is located at http://www.oracle.com/us/support/assurance/index.html Consumers can go to http://www.java.com/en/download/installed.jsp to ensure that they have the latest version of Java running on their desktops. More information on Java Update is available at http://www.java.com/en/download/help/java_update.xml

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  • Security Alert for CVE-2012-4681 Released

    - by Eric P. Maurice
    Hi, this is Eric Maurice again! Oracle has just released Security Alert CVE-2012-4681 to address 3 distinct but related vulnerabilities and one security-in-depth issue affecting Java running in desktop browsers.  These vulnerabilities are: CVE-2012-4681, CVE-2012-1682, CVE-2012-3136, and CVE-2012-0547.  These vulnerabilities are not applicable to standalone Java desktop applications or Java running on servers, i.e. these vulnerabilities do not affect any Oracle server based software. Vulnerabilities CVE-2012-4681, CVE-2012-1682, and CVE-2012-3136 have each received a CVSS Base Score of 10.0.  This score assumes that the affected users have administrative privileges, as is typical in Windows XP.  Vulnerability CVE-20120-0547 has received a CVSS Base Score of 0.0 because this vulnerability is not directly exploitable in typical user deployments, but Oracle has issued a security-in-depth fix for this issue as it can be used in conjunction with other vulnerabilities to significantly increase the overall impact of a successful exploit. If successfully exploited, these vulnerabilities can provide a malicious attacker the ability to plant discretionary binaries onto the compromised system, e.g. the vulnerabilities can be exploited to install malware, including Trojans, onto the targeted system.  Note that this malware may in some instances be detected by current antivirus signatures upon its installation.  Due to the high severity of these vulnerabilities, Oracle recommends that customers apply this Security Alert as soon as possible.  Furthermore, note that the technical details of these vulnerabilities are widely available on the Internet and Oracle has received external reports that these vulnerabilities are being actively exploited in the wild.    Developers should download the latest release at http://www.oracle.com/technetwork/java/javase/downloads/index.html   Java users should download the latest release of JRE at http://java.com, and of course   Windows users can take advantage of the Java Automatic Update to get the latest release. For more information: The Advisory for Security Alert CVE-2012-4681 is located at http://www.oracle.com/technetwork/topics/security/alert-cve-2012-4681-1835715.html  Users can verify that they’re running the most recent version of Java by visiting: http://java.com/en/download/installed.jsp    Instructions on removing older (and less secure) versions of Java can be found at http://java.com/en/download/faq/remove_olderversions.xml   

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  • October 2012 Critical Patch Update and Critical Patch Update for Java SE Released

    - by Eric P. Maurice
    Hi, this is Eric Maurice. Oracle has just released the October 2012 Critical Patch Update and the October 2012 Critical Patch Update for Java SE.  As a reminder, the release of security patches for Java SE continues to be on a different schedule than for other Oracle products due to commitments made to customers prior to the Oracle acquisition of Sun Microsystems.  We do however expect to ultimately bring Java SE in line with the regular Critical Patch Update schedule, thus increasing the frequency of scheduled security releases for Java SE to 4 times a year (as opposed to the current 3 yearly releases).  The schedules for the “normal” Critical Patch Update and the Critical Patch Update for Java SE are posted online on the Critical Patch Updates and Security Alerts page. The October 2012 Critical Patch Update provides a total of 109 new security fixes across a number of product families including: Oracle Database Server, Oracle Fusion Middleware, Oracle E-Business Suite, Supply Chain Products Suite, Oracle PeopleSoft Enterprise, Oracle Customer Relationship Management (CRM), Oracle Industry Applications, Oracle FLEXCUBE, Oracle Sun products suite, Oracle Linux and Virtualization, and Oracle MySQL. Out of these 109 new vulnerabilities, 5 affect Oracle Database Server.  The most severe of these Database vulnerabilities has received a CVSS Base Score of 10.0 on Windows platforms and 7.5 on Linux and Unix platforms.  This vulnerability (CVE-2012-3137) is related to the “Cryptographic flaws in Oracle Database authentication protocol” disclosed at the Ekoparty Conference.  Because of timing considerations (proximity to the release date of the October 2012 Critical Patch Update) and the need to extensively test the fixes for this vulnerability to ensure compatibility across the products stack, the fixes for this vulnerability were not released through a Security Alert, but instead mitigation instructions were provided prior to the release of the fixes in this Critical Patch Update in My Oracle Support Note 1492721.1.  Because of the severity of these vulnerabilities, Oracle recommends that this Critical Patch Update be installed as soon as possible. Another 26 vulnerabilities fixed in this Critical Patch Update affect Oracle Fusion Middleware.  The most severe of these Fusion Middleware vulnerabilities has received a CVSS Base Score of 10.0; it affects Oracle JRockit and is related to Java vulnerabilities fixed in the Critical Patch Update for Java SE.  The Oracle Sun products suite gets 18 new security fixes with this Critical Patch Update.  Note also that Oracle MySQL has received 14 new security fixes; the most severe of these MySQL vulnerabilities has received a CVSS Base Score of 9.0. Today’s Critical Patch Update for Java SE provides 30 new security fixes.  The most severe CVSS Base Score for these Java SE vulnerabilities is 10.0 and this score affects 10 vulnerabilities.  As usual, Oracle reports the most severe CVSS Base Score, and these CVSS 10.0s assume that the user running a Java Applet or Java Web Start application has administrator privileges (as is typical on Windows XP). However, when the user does not run with administrator privileges (as is typical on Solaris and Linux), the corresponding CVSS impact scores for Confidentiality, Integrity, and Availability are "Partial" instead of "Complete", typically lowering the CVSS Base Score to 7.5 denoting that the compromise does not extend to the underlying Operating System.  Also, as is typical in the Critical Patch Update for Java SE, most of the vulnerabilities affect Java and Java FX client deployments only.  Only 2 of the Java SE vulnerabilities fixed in this Critical Patch Update affect client and server deployments of Java SE, and only one affects server deployments of JSSE.  This reflects the fact that Java running on servers operate in a more secure and controlled environment.  As discussed during a number of sessions at JavaOne, Oracle is considering security enhancements for Java in desktop and browser environments.  Finally, note that the Critical Patch Update for Java SE is cumulative, in other words it includes all previously released security fixes, including the fix provided through Security Alert CVE-2012-4681, which was released on August 30, 2012. For More Information: The October 2012 Critical Patch Update advisory is located at http://www.oracle.com/technetwork/topics/security/cpuoct2012-1515893.html The October 2012 Critical Patch Update for Java SE advisory is located at http://www.oracle.com/technetwork/topics/security/javacpuoct2012-1515924.html.  An online video about the importance of keeping up with Java releases and the use of the Java auto update is located at http://medianetwork.oracle.com/video/player/1218969104001 More information about Oracle Software Security Assurance is located at http://www.oracle.com/us/support/assurance/index.html  

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  • Take Advantage of Oracle's Ongoing Assurance Effort!

    - by eric.maurice
    Hi, this is Eric Maurice again! A few years ago, I posted a blog entry, which discussed the psychology of patching. The point of this blog entry was that a natural tendency existed for systems and database administrators to be reluctant to apply patches, even security patches, because of the fear of "breaking" the system. Unfortunately, this belief in the principle "if it ain't broke, don't fix it!" creates significant risks for organizations. Running systems without applying the proper security patches can greatly compromise the security posture of the organization because the security controls available in the affected system may be compromised as a result of the existence of the unfixed vulnerabilities. As a result, Oracle continues to strongly recommend that customers apply all security fixes as soon as possible. Most recently, I have had a number of conversations with customers who questioned the need to upgrade their highly stable but otherwise unsupported Oracle systems. These customers wanted to know more about the kind of security risks they were exposed to, by running obsolete versions of Oracle software. As per Oracle Support Policies, Critical Patch Updates are produced for currently supported products. In other words, Critical Patch Updates are not created by Oracle for product versions that are no longer covered under the Premier Support or Extended Support phases of the Lifetime Support Policy. One statement used in each Critical Patch Update Advisory is particularly important: "We recommend that customers upgrade to a supported version of Oracle products in order to obtain patches. Unsupported products, releases and versions are not tested for the presence of vulnerabilities addressed by this Critical Patch Update. However, it is likely that earlier versions of affected releases are also affected by these vulnerabilities." The purpose of this warning is to inform Oracle customers that a number of the vulnerabilities fixed in each Critical Patch Update may affect older versions of a specific product line. In other words, each Critical Patch Update provides a number of fixes for currently supported versions of a given product line (this information is listed for each bug in the Risk Matrices of the Critical Patch Update Advisory), but the unsupported versions in the same product line, while they may be affected by the vulnerabilities, will not receive the fixes, and are therefore vulnerable to attacks. The risk assumed by organizations wishing to remain on unsupported versions is amplified by the behavior of malicious hackers, who typically will attempt to, and sometimes succeed in, reverse-engineering the content of vendors' security fixes. As a result, it is not uncommon for exploits to be published soon after Oracle discloses vulnerabilities with the release of a Critical Patch Update or Security Alert. Let's consider now the nature of the vulnerabilities that may exist in obsolete versions of Oracle software. A number of severe vulnerabilities have been fixed by Oracle over the years. While Oracle does not test unsupported products, releases and versions for the presence of vulnerabilities addressed by each Critical Patch Update, it should be assumed that a number of the vulnerabilities fixed with the Critical Patch Update program do exist in unsupported versions (regardless of the product considered). The most severe vulnerabilities fixed in past Critical Patch Updates may result in full compromise of the targeted systems, down to the OS level, by remote and unauthenticated users (these vulnerabilities receive a CVSS Base Score of 10.0) or almost as critically, may result in the compromise of the affected systems (without compromising the underlying OS) by a remote and unauthenticated users (these vulnerabilities receive a CVSS Base Score of 7.5). Such vulnerabilities may result in complete takeover of the targeted machine (for the CVSS 10.0), or may result in allowing the attacker the ability to create a denial of service against the affected system or even hijacking or stealing all the data hosted by the compromised system (for the CVSS 7.5). The bottom line is that organizations should assume the worst case: that the most critical vulnerabilities are present in their unsupported version; therefore, it is Oracle's recommendation that all organizations move to supported systems and apply security patches in a timely fashion. Organizations that currently run supported versions but may be late in their security patch release level can quickly catch up because most Critical Patch Updates are cumulative. With a few exceptions noted in Oracle's Critical Patch Update Advisory, the application of the most recent Critical Patch Update will bring these products to current security patch level and provide the organization with the best possible security posture for their patch level. Furthermore, organizations are encouraged to upgrade to most recent versions as this will greatly improve their security posture. At Oracle, our security fixing policies state that security fixes are produced for the main code line first, and as a result, our products benefit from the mistakes made in previous version(s). Our ongoing assurance effort ensures that we work diligently to fix the vulnerabilities we find, and aim at constantly improving the security posture our products provide by default. Patch sets include numerous in-depth fixes in addition to those delivered through the Critical Patch Update and, in certain instances, important security fixes require major architectural changes that can only be included in new product releases (and cannot be backported through the Critical Patch Update program). For More Information: • Mary Ann Davidson is giving a webcast interview on Oracle Software Security Assurance on February 24th. The registration link for attending this webcast is located at http://event.on24.com/r.htm?e=280304&s=1&k=6A7152F62313CA09F77EBCEEA9B6294F&partnerref=EricMblog • A blog entry discussing Oracle's practices for ensuring the quality of Critical patch Updates can be found at http://blogs.oracle.com/security/2009/07/ensuring_critical_patch_update_quality.html • The blog entry "To patch or not to patch" is located at http://blogs.oracle.com/security/2008/01/to_patch_or_not_to_patch.html • Oracle's Support Policies are located at http://www.oracle.com/us/support/policies/index.html • The Critical Patch Update & Security Alert page is located at http://www.oracle.com/technetwork/topics/security/alerts-086861.html

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  • Python and Ruby in Tuxedo

    - by Maurice Gamanho
    With the release of SALT 11gR1, you can now develop Python/Ruby services/applications on Oracle Tuxedo platform. Python functions or Ruby classes can be invoked as Tuxedo services by other Tuxedo services or clients and, in addition, Python/Ruby applications can invoke existing Tuxedo services. SALT 11gR1 combines the proven scalability, reliability and performance of the Tuxedo runtime infrastructure with the agility provided by these dynamic scripting languages, providing a highly available and almost linearly scalable platform for Python and Ruby application development. Another benefit of developing Python and Ruby applications with Tuxedo is that services are SOA enabled from inception by virtue of Tuxedo's comprehensive integration options with J2EE app servers, mainframe applications, Web services, etc. Other interesting features are dynamic re-loading of scripts, where script changes are picked up automatically or when the administrator decides, and server-side typing, where Python functions and Ruby classes are given interfaces by way of the Tuxedo Metadata Repository. More information can be found on the Oracle SALT 11gR1 documentation page. See also SCA Python and Ruby Programming and Python and Ruby Data Type Mapping.

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  • Oracle SALT 11gR1

    - by Maurice Gamanho
    With the 11gR1 release, SALT now supports Web services transactions (WS-TX). In a nutshell, the SALT 11gR1 Web services gateway (GWWS) now supports bi-directional transactional interoperability. What this means is that Tuxedo application services can now be invoked in global transaction context using Web services. This feature is natural to a product like Tuxedo given its history as transaction processing monitor and its significant contribution to the X/Open (now the Open Group) XA specification. We implemented Web Services Coordination (WS-COOR) and Web Services Atomic Transaction (WS-AT). We also tested and certified with WebLogic Server 11gR1 and Microsoft WCF 3.5 (.Net Framework). For more information, please visit the Tuxedo OTN home page, where you can download a document and samples that will help you get started with WS-TX in Tuxedo. You can check the product documentation here.

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  • links for 2010-05-19

    - by Bob Rhubart
    Presentations from #otnarchday in Dallas now available on Slideshare Includes presentations on IT Optimization, Application Integration Architecture, Application Grid, and Infrastructure Consolidation. More to come. Anthony Shorten: JMX Based Monitoring - Part Four - Business App Server Monitoring Anthony Shorten discuss a new Oracle Utilities Application Framework V4 feature that allows JMX to be used for management and monitoring the Oracle Utilities business application server component. (tags: oracle otn java architect) New book: Oracle Coherence 3.5 An overview of the new book by authors Aleksandar Seovic, Mark Falco, Patrick Peralta. (tags: oracle otn grid architect) Douwe Pieter van den Bos: Next step in Virtualization: VirtualBox 3.2 "For businesses, VirtualBox just might be the answer they where looking for," says Douwe Pieter van den Bos. "A simple and widely supported virtual machine." (tags: oracle otn virtualization architect) Maurice Gamanho: Python and Ruby in Tuxedo Maurice Gamanho's quick overview of new features in Oracle's Service Architecture Leveraging Tuxedo (SALT) 11gR1. (tags: oracle otn soa architect) Live Webcast: Oracle and AmberPoint - May 20, 2010 - 10 a.m. PT/1 p.m. ET Ed Horst and Ashish Mohindroo discuss the advantages of the Oracle and AmberPoint combination. (tags: oracle otn architect soa governance)

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  • A New Threat To Web Applications: Connection String Parameter Pollution (CSPP)

    - by eric.maurice
    Hi, this is Shaomin Wang. I am a security analyst in Oracle's Security Alerts Group. My primary responsibility is to evaluate the security vulnerabilities reported externally by security researchers on Oracle Fusion Middleware and to ensure timely resolution through the Critical Patch Update. Today, I am going to talk about a serious type of attack: Connection String Parameter Pollution (CSPP). Earlier this year, at the Black Hat DC 2010 Conference, two Spanish security researchers, Jose Palazon and Chema Alonso, unveiled a new class of security vulnerabilities, which target insecure dynamic connections between web applications and databases. The attack called Connection String Parameter Pollution (CSPP) exploits specifically the semicolon delimited database connection strings that are constructed dynamically based on the user inputs from web applications. CSPP, if carried out successfully, can be used to steal user identities and hijack web credentials. CSPP is a high risk attack because of the relative ease with which it can be carried out (low access complexity) and the potential results it can have (high impact). In today's blog, we are going to first look at what connection strings are and then review the different ways connection string injections can be leveraged by malicious hackers. We will then discuss how CSPP differs from traditional connection string injection, and the measures organizations can take to prevent this kind of attacks. In web applications, a connection string is a set of values that specifies information to connect to backend data repositories, in most cases, databases. The connection string is passed to a provider or driver to initiate a connection. Vendors or manufacturers write their own providers for different databases. Since there are many different providers and each provider has multiple ways to make a connection, there are many different ways to write a connection string. Here are some examples of connection strings from Oracle Data Provider for .Net/ODP.Net: Oracle Data Provider for .Net / ODP.Net; Manufacturer: Oracle; Type: .NET Framework Class Library: - Using TNS Data Source = orcl; User ID = myUsername; Password = myPassword; - Using integrated security Data Source = orcl; Integrated Security = SSPI; - Using the Easy Connect Naming Method Data Source = username/password@//myserver:1521/my.server.com - Specifying Pooling parameters Data Source=myOracleDB; User Id=myUsername; Password=myPassword; Min Pool Size=10; Connection Lifetime=120; Connection Timeout=60; Incr Pool Size=5; Decr Pool Size=2; There are many variations of the connection strings, but the majority of connection strings are key value pairs delimited by semicolons. Attacks on connection strings are not new (see for example, this SANS White Paper on Securing SQL Connection String). Connection strings are vulnerable to injection attacks when dynamic string concatenation is used to build connection strings based on user input. When the user input is not validated or filtered, and malicious text or characters are not properly escaped, an attacker can potentially access sensitive data or resources. For a number of years now, vendors, including Oracle, have created connection string builder class tools to help developers generate valid connection strings and potentially prevent this kind of vulnerability. Unfortunately, not all application developers use these utilities because they are not aware of the danger posed by this kind of attacks. So how are Connection String parameter Pollution (CSPP) attacks different from traditional Connection String Injection attacks? First, let's look at what parameter pollution attacks are. Parameter pollution is a technique, which typically involves appending repeating parameters to the request strings to attack the receiving end. Much of the public attention around parameter pollution was initiated as a result of a presentation on HTTP Parameter Pollution attacks by Stefano Di Paola and Luca Carettoni delivered at the 2009 Appsec OWASP Conference in Poland. In HTTP Parameter Pollution attacks, an attacker submits additional parameters in HTTP GET/POST to a web application, and if these parameters have the same name as an existing parameter, the web application may react in different ways depends on how the web application and web server deal with multiple parameters with the same name. When applied to connections strings, the rule for the majority of database providers is the "last one wins" algorithm. If a KEYWORD=VALUE pair occurs more than once in the connection string, the value associated with the LAST occurrence is used. This opens the door to some serious attacks. By way of example, in a web application, a user enters username and password; a subsequent connection string is generated to connect to the back end database. Data Source = myDataSource; Initial Catalog = db; Integrated Security = no; User ID = myUsername; Password = XXX; In the password field, if the attacker enters "xxx; Integrated Security = true", the connection string becomes, Data Source = myDataSource; Initial Catalog = db; Integrated Security = no; User ID = myUsername; Password = XXX; Intergrated Security = true; Under the "last one wins" principle, the web application will then try to connect to the database using the operating system account under which the application is running to bypass normal authentication. CSPP poses serious risks for unprepared organizations. It can be particularly dangerous if an Enterprise Systems Management web front-end is compromised, because attackers can then gain access to control panels to configure databases, systems accounts, etc. Fortunately, organizations can take steps to prevent this kind of attacks. CSPP falls into the Injection category of attacks like Cross Site Scripting or SQL Injection, which are made possible when inputs from users are not properly escaped or sanitized. Escaping is a technique used to ensure that characters (mostly from user inputs) are treated as data, not as characters, that is relevant to the interpreter's parser. Software developers need to become aware of the danger of these attacks and learn about the defenses mechanism they need to introduce in their code. As well, software vendors need to provide templates or classes to facilitate coding and eliminate developers' guesswork for protecting against such vulnerabilities. Oracle has introduced the OracleConnectionStringBuilder class in Oracle Data Provider for .NET. Using this class, developers can employ a configuration file to provide the connection string and/or dynamically set the values through key/value pairs. It makes creating connection strings less error-prone and easier to manager, and ultimately using the OracleConnectionStringBuilder class provides better security against injection into connection strings. For More Information: - The OracleConnectionStringBuilder is located at http://download.oracle.com/docs/cd/B28359_01/win.111/b28375/OracleConnectionStringBuilderClass.htm - Oracle has developed a publicly available course on preventing SQL Injections. The Server Technologies Curriculum course "Defending Against SQL Injection Attacks!" is located at http://st-curriculum.oracle.com/tutorial/SQLInjection/index.htm - The OWASP web site also provides a number of useful resources. It is located at http://www.owasp.org/index.php/Main_Page

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  • I need an approach to the problem of preventing inserting duplicate records into the database

    - by Maurice
    Apologies is this question is asked on the incorrect "stack" A webservice that I call returns a list of data. The data from the webservice is updated periodically, so a call to the webservice done in one hour could return the same data as a call done in an hour. Also, the data is returned based on a start and end date. We have multiple users that can run the webservice search, and duplicate data is most likely to be returned (especially for historical data). However I don't want to insert this duplicate data in the database. I've created a db table in which the data is stored (most important columns are) Id int autoincrement PK Date date not null --The date to which the data set belongs. LastUpdate date not null --The date the data set was last updated. UserName varchar(50) --The name of the user doing the search. I use sql server 2008 express with c# 4.0 and visual studio 2010. Entity Framework is used as the ORM. If stored procedures could be avoided in the proposed solution, then that will be a plus. Another way of looking interpreting what I'm asking a solution for is as follows: I have a million unique records in my table. A user does a new search. The search results from the user contains around 300k of the data that is already in the db. An efficient solution to finding an inserting only the unique records is needed.

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  • extension-base file associations

    - by Maurice Perry
    Hi there, I am using ubuntu 9.10, and I would like to associate thunderbird to all the files with the extension .eml. The problem is that is seems that ubuntu is attributing the mime type text/plain to these files, based on their content, which meens that if I set thunderbird as the default application for .eml files, all the other text files (.txt for instance) will be opened with thunderbird. Is it possible to add a rule to impose a mime type based on the file extension, regardless of its content?

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  • mac: How to mount ejected external hdd again

    - by Maurice Kroon
    I've used my WD My Book 1TB for quite some time now. I always simply unplug it without officially 'ejecting' it. However, yesterday I did eject it (the partitions) before unplugging it. However, now, when i reconnect the hdd, it does not show the drives. It only shows the WD SmartWare partition (which is empty btw). The rest doesn't start. Does anyone know how to mount an unmounted disk? thx in advance!

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  • Windows Server 2008 ignores any change made to firewall

    - by Maurice Courtois
    I have been trying for the last 2 hours to make my Windows Server 2008 answer ping. I have tried almost every single solution I have found on the web, so far nothing work. My current setup: 2 NIC (1x Internet connection, 1x Local network) Server act as VPN server. So I set the corresponding NIC as either Public or Private. I also enable the rule for "File and Printer Sharing (Echo Request...)" for all Nic and from any IPs. I always been able to ping from the local network or the local ip while connected to the VPN. I also tried to create a specific rule for ICMP ping and disabling the firewall for all but the public nic. Regardless of all this, I still can't ping that server from Internet. Any idea suggestion what could cause this? I have the impression that when you set the server as VPN (I switch the box on when setting it up to block everything else than VPN connection) that changing anything to the firewall setting thought mmc is pointless !?!?

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  • Silverlight Cream for April 12, 2010 -- #837

    - by Dave Campbell
    In this Issue: Michael Washington, Joe McBride, Kirupa, Maurice de Beijer, Brad Abrams, Phil Middlemiss, and CorrinaB. Shoutout: Charlie Kindel has a post up about the incompatibility between VS2010RTM and what we currently have for WP7: Visual Studio 2010 RTM and the Windows Phone Developer Tools CTP and if you want to be notified when that changes, submit your email here. Erik Mork and Co. have their latest This Week in Silverlight 4.9.2010 posted. From SilverlightCream.com: Simplified MVVM: Silverlight Video Player Michael Washington created a 'designable' video player using MVVM that allows any set of controls to implement the player. Great tutorial and all the code. Windows Phone 7 Panorama Behaviors Joe McBride posted a link to a couple WP7 gesture behaviors and a link out to some more by smartyP. Event Bubbling and Tunneling Kirupa has a great article up on Event Bubbling and Tunneling... showing the route that events take through your WPF or Silverlight app. Using dynamic objects in Silverlight 4 Maurice de Beijer has a blog up about binding to indexed properties in Silverlight 4... in other words, you don't have to know what you're binging to at design time. Silverlight 4 + RIA Services - Ready for Business: Ajax Endpoint Brad Abrams is still continuing his RIA series. His latest is on exposing your RIA Services in JSON. Changing Data-Templates at run-time from the VM Looks like I missed Phil Middlemiss' latest post on Changing DataTemplates at run-time. He has a visual of why you might need this right up-front, and is a very common issue. Check out the solution he provides us. Windows System Color Theme for Silverlight - Part Three CorrinaB blogged screenshots and discussion of 3 new themes that are going to be coming up, and what they've done to the controls in general. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Team Schedule

    - by THE
    .conf td{ width: 350px; border: 1px solid black; background-color: #ffcccc; } .myt table { border: 1px solid black; } .myt tr { border: 0px solid black; } .mytg td{ border: 1px solid black; padding: 5px; background-color:#808080; } .myt td{ border: 1px solid black; padding: 5px; } .myt th{ border: 1px solid black; padding: 5px; background-color:#c0c0c0; } So you want to meet the Proactive Support Technology Team?Here is where we can be found next: Conference Date Member link Oracle User Group Conference EPM & Hyperion 2012 23+24 October 2012 Maurice Bauhahn Grzegorz Reizer info Advisor Webcast: New features of HFM 17 November 2012 Grzegorz Reizer info OUG Ireland BI & EPM SIG Meeting 20 November 2012 Maurice Bauhahn info UKOUG 2012 Conference: ICC, Birmingham 3–5 December 2012 Ian Bristow info You will find this schedule via the link in the upper right section of this blog under "meet the team", or you can bookmark this post

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  • jqGrid: how to change cell padding

    - by Maurice
    Hi, I'm using jqGrid3.6.5 on google hosted jQueryUI1.8.2 and jQuery1.4.2 I want to change the cell padding of a jqGrid. For testing purposes I want to set it to 10px all around each cell. The only option I've come across while googling is the following: add padding with CSS. eg. #grid-id td{ padding:10px; } set cellLayout option to 21 (paddingleft + paddingright + borderleft) When I have no set width on any of the columns in my colModel, this works like expected. Though when I resize one of the headers, or set a column width in the colModel, headers and cells aren't aligned anymore. Anyone know how to fix this or know an alternative way to alter cell padding?

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  • JQuery templating engines

    - by Maurice
    I am looking for a template engine to use client side. I have been trying a few like jsRepeater and jQuery Templates. While they seem to work OK in FireFox they all seem to break down in IE7 when it comes down to rendering HTML tables. I also took a look at MicrosoftAjaxTemplates.js (from http://www.codeplex.com/aspnet/Release/ProjectReleases.aspx?ReleaseId=16766) but turns out that has the same problem. Any advice on other templating engines to use?

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  • Zend_Search_Lucene range query error

    - by Maurice
    I have set up each document with a date field. (keyword) Values stored in it are in this format; 20100511 Each time I try to perform a ranged query, I get the following error: date:[10000000 TO 20000000] At least one range query boundary term must be non-empty term Anyone got a clue?

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