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  • Which Happens First? Anyone Know Exactly How The Apache Server Will Handle This Request?

    - by user310594
    Hello, To keep things simple, please allow the "assumption" that some code requires the use of a full URL, even though the domain is on the same server, i.e. a simple file path cannot be used. TCP/IP?? Question: If a form action target = "http://this-full-URL.com/postdata" (for example) and that URL is also on the same server, then which happens first? A) Data is sent "out onto the web", and then returns to the same server, or B) Before sending any (possibly sensitive) data, the server (Linux, Apache, PHP), first "discovers" the target address is local, so (clearly) no data is sent over the net? Thank you.

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  • Attack from anonymous proxy

    - by mmgn
    We got attacked by some very-bored teenagers registering in our forums and posting very explicit material using anonymous proxy websites, like http://proxify.com/ Is there a way to check the registration IP against a black list database? Has anyone experienced this and had success?

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  • Java - store sensitive data

    - by Mike
    Hello. I develop application with Java. I need to store some initial configuration data in some kind of file. I want my app to be able to read this data, but I don't want user to do so. Example : application loads IP from encrypted file. User sees like "dsda@#21da@" so he won't bother doing anything :) How should I do such a thing? Thanx!

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  • How to inject dependencies into a CustomUserNamePasswordValidator in WCF?

    - by Dannerbo
    I'm using a UserNamePasswordValidator in WCF along with Unity for my dependency injection, but since WCF creates the instance of the UserNamePasswordValidator, I cannot inject my container into the class. So how would one go about this? The simplest solution I can think of is to create a static proxy/wrapper class around a static instance of a UnityContainer, which exposes all the same methods... This way, any class can access the container, and I don't need to inject it everywhere. So I could just do UnityContainerWrapper.Resolve() anywhere in code. So basically this solution solves 2 problems for me, I can use it in classes that I'm not creating an instance of, and I can use it anywhere without having to inject the container into a bunch of classes. The only downside I can think of is that I'm now potentially exposing my container to a bunch of classes that wouldn't of had access to the container before. Not really sure if this is even a problem though?

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  • Password checking in dojo

    - by Richard
    I want to check that two passwords are the same using Dojo. Here is the HTML I have: <form id="form" action="." dojoType="dijit.form.Form" / <pPassword: <input type="password" name="password1" id="password1" dojoType="dijit.form.ValidationTextBox" required="true" invalidMessage="Please type a password" /</p <pConfirm: <input type="password" name="password2" id="password2" dojoType="dijit.form.ValidationTextBox" required="true" invalidMessage="This password doesn't match your first password" /</p <div dojoType="dijit.form.Button" onClick="onSave"Save</div </form Here is the JavaScript I have so far: var onSave = function() { if(dijit.byId('form').validate()) { alert('Good form'); } else { alert('Bad form'); } } Thanks for your help. I could do this in pure JavaScript, but I'm trying to find the Dojo way of doing it.

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  • How to prevent arbitrary code execution vulnerability in our programs?

    - by Calmarius
    You always read in changelogs when your system or browser or any program updates that they fixed a bug that made possible that an attacker can execute any code in your computer with a forged website, or attacking your computer with carefully forged packets, etc... Because you read it so often that means any program can have similar vulnerabilites... What causes this? how to design our programs to prevent similar issues?

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  • SSL Authentication with Certificates: Should the Certificates have a hostname?

    - by sixtyfootersdude
    Summary JBoss allows clients and servers to authenticate using certificates and ssl. One thing that seems strange is that you are not required to give your hostname on the certificate. I think that this means if Server B is in your truststore, Sever B can pretend to be any server that they want. (And likewise: if Client B is in your truststore...) Am I missing something here? Authentication Steps (Summary of Wikipeida Page) Client Server ================================================================================================= 1) Client sends Client Hello ENCRIPTION: None - highest TLS protocol supported - random number - list of cipher suites - compression methods 2) Sever Hello ENCRIPTION: None - highest TLS protocol supported - random number - choosen cipher suite - choosen compression method 3) Certificate Message ENCRIPTION: None - 4) ServerHelloDone ENCRIPTION: None 5) Certificate Message ENCRIPTION: None 6) ClientKeyExchange Message ENCRIPTION: server's public key => only server can read => if sever can read this he must own the certificate - may contain a PreMasterSecerate, public key or nothing (depends on cipher) 7) CertificateVerify Message ENCRIPTION: clients private key - purpose is to prove to the server that client owns the cert 8) BOTH CLIENT AND SERVER: - use random numbers and PreMasterSecret to compute a common secerate 9) Finished message - contains a has and MAC over previous handshakes (to ensure that those unincripted messages did not get broken) 10) Finished message - samething Sever Knows The client has the public key for the sent certificate (step 7) The client's certificate is valid because either: it has been signed by a CA (verisign) it has been self-signed BUT it is in the server's truststore It is not a replay attack because presumably the random number (step 1 or 2) is sent with each message Client Knows The server has the public key for the sent certificate (step 6 with step 8) The server's certificate is valid because either: it has been signed by a CA (verisign) it has been self-signed BUT it is in the client's truststore It is not a replay attack because presumably the random number (step 1 or 2) is sent with each message Potential Problem Suppose the client's truststore has certs in it: Server A Server B (malicous) Server A has hostname www.A.com Server B has hostname www.B.com Suppose: The client tries to connect to Server A but Server B launches a man in the middle attack. Since server B: has a public key for the certificate that will be sent to the client has a "valid certificate" (a cert in the truststore) And since: certificates do not have a hostname feild in them It seems like Server B can pretend to be Server A easily. Is there something that I am missing?

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  • Best evidence to offer a sandboxed appdomain for a C# evaluator.

    - by scope-creep
    I have a c# evaluator which uses the (I think) the .Net 4 new simplified sandboxed appdomain model to host the c# assembly, with remoting doing the rest. The call to create the appdomain is Evidence ev = new Evidence(); ev.AddHostEvidence(new Zone(SecurityZone.Trusted)); PermissionSet pset = SecurityManager.GetStandardSandbox(ev); AppDomainSetup ads = new AppDomainSetup(); ads.ApplicationBase = "C:\\Sandbox"; // Create the sandboxed domain. AppDomain sandbox = AppDomain.CreateDomain( "Sandboxed Domain", ev, ads, pset, null); The c# eval is embedded in a server app, but I don't want give the sandbox to much control unless it bo bo's the caller. What i'm looking for is regarding some clarification as to what to provide as Evidence from the caller. I'm looking for advice and guidance. Any help would be appreciated.

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  • c# Sending emails with authentication. standard approach not working

    - by Ready Cent
    I am trying to send an email using the following very standard code. However, I get the error that follow... MailMessage message = new MailMessage(); message.Sender = new MailAddress("[email protected]"); message.To.Add("[email protected]"); message.Subject = "test subject"; message.Body = "test body"; SmtpClient client = new SmtpClient(); client.Host = "mail.myhost.com"; //client.Port = 587; NetworkCredential cred = new NetworkCredential(); cred.UserName = "[email protected]"; cred.Password = "correct password"; cred.Domain = "mail.myhost.com"; client.Credentials = cred; client.UseDefaultCredentials = false; client.Send(message); Mailbox unavailable. The server response was: No such user here. This recipient email address definitely works. To make this account work I had to do some special steps in outlook. Specifically, I had to do change account settings - more settings - outgoing server - my outgoing server requires authentication & use same settings. I am wondering if there is some other strategy. I think the key here is that my host is Server Intellect and I know that some people on here use them so hopefully someone else has been able to get through this. I did talk to support but they said with coding issues I am on my own :o

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  • Maintaining a secure database of user logins and info?

    - by Rafe Kettler
    I want to have a login form on a charity website I am building (it's for a friend, and I'm learning on the go), and I want to know what languages/software should I learn to build databases for user logins and info? Note: it HAS to be secure and relatively simple to learn for someone with moderate programming experience. Update: I understand that CMSs offer good tools for logins etc. but I want to do this all by myself.

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  • What makes an input vulnerable to XSS?

    - by vtortola
    Hi! I've been reading about XSS and I made a simple form with a text and submit input, but when I execute <script>alert();</script> on it, nothing happens, the server gets that string and that's all. What do I have to do for make it vulnerable?? (then I'll learn what I shouldn't do hehe) Cheers.

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  • Use my own authentication in tomcat

    - by mabuzer
    how can I force tomcat to use my own implementation of Authenticator, and not the existing one like [FORM, BASIC, DIGEST,, etc]. I know if I added my authentication class name in org.apache.catalina.startup.Authenticators.properties it would work,,, any help please... I need an alternative for this...

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  • Is *not* using the asp.net membership provider a bad idea?

    - by EJB
    Is it generally a really bad idea to not use the built-in asp.net membership provider? I've always rolled my own for my asp.net apps (public facing), and really have not had any problems in doing so. It works, and seems to avoid a layer of complexity. My needs are pretty basic: once setup, the user must use email address and password to login, if they forget it, it will be emailed back to them (a new one). After setup there is little that needs to be done to each user account, but I do need to store several extra fields with each user (full name, telephone and a few other fields etc). The number of users that required login credentials are small (usually just the administrator and a few backups), and everyone else uses the site unauthenticated. What are the big advantages that I might be missing out on by skipping the asp.net membership provider functionality?

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  • How to securely serve S3 files to blog

    - by Hugo Palma
    I'm starting a blog and i'm in the process of choosing where should i host it. For now i want a free solution like Blogger or Wordpress.com. The problem i'm facing is that i want to use files i have in a S3 bucket in my blog but none of the blog solutions i found supports any kind of server code, which means that in order to use S3 query string authentication i would have to put vulnerable information in the client. For obvious reasons i don't want to do that. So, i'm looking for ideas on how i can safely include content from S3 in a free blog host.

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  • Hashes or tokens for "remember me" cookies?

    - by Emanuil Rusev
    When it comes to remember me cookies, there are 2 distinct approaches: Hashes The remember me cookie stores a string that can identify the user (i.e. user ID) and a string that can prove that the identified user is the one it pretends to be - usually a hash based on the user password. Tokens The remember me cookie stores a random (meaningless), yet unique string that corresponds with with a record in a tokens table, that stores a user ID. Which approach is more secure and what are its disadvantages?

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  • How necessary is using PHP filters?

    - by Jamie
    I'm a relatively newbie to PHP and just making my way through the W3Schools tut. The tut makes a big point of saying you must always filter external data (i.e. cookies, form data etc). I'm writing a fairly simple system that talks with a third party Joomla extension. It's at a prototype stage where I'm just wanting to demonstrate the functionality in a minimum viable product. Basically, I'd like to know... what's the worst that could happen in I don't filter content. Are we talking 'I might get a bunch of spam', or 'a good hacker could get root server access'? Have hunted around online, but would love any of your experience / insight on the matter!

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  • My page was attacked via xss, but on ftp all files are not changed?

    - by Dobiatowski
    Hi, yesterday i noticed that sometimes on my webpage shows up javascript errors. when i went to source code, i found that one of .js files was totaly replaced with a ton of porn links. i checked the ftp for this file, but there was just old javascript file without any changes. yet i go back to check source code via browser and indeed there was again original .js today i visited my webpage again and the problem repeated. first visit showed me ton of porn pages cached .js file was hacked but after clearing browser cache js go back to oryginal i checked all files on my ftp against my offilne version, but all files are without any change. in last few years i was attacked by xss few times but in every case it was easy to diagnose and fix. but now i spend 12h and didnt find infection. do you have any idea how to find it? the webpage is: http://robert.frk.pl

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  • SQL Server Reporting Services 2008: How to set the credentials property properly?

    - by wgpubs
    No matter how I configure the Credentials property I get a 401 exception when I try to Render the report. Here is my (latest) code: var rs = new ReportExecutionService(); rs.Url = "https://myserver/reportserver/reportexecution2005.asmx"; var myCache = new System.Net.CredentialCache(); myCache.Add(new Uri(rs.Url), "kerberos" , new System.Net.NetworkCredential("username", "password", "Domain")); rs.Credentials = myCache; The URL and credentials are all correct. But still getting a 401 when I cal rs.Render(...). The Reporting Services install is sitting on a Windows Server 2008 box and requires integrated authentication. Thanks

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  • Java applet loading images from external jars

    - by Mathias
    I have a jar on a server, and users should be able to develop extensions for it. Therefore the jars main class should be extended and some resources should be added to a second user created jar which will be loaded from another server or locally. Now I have problems accessing the resources (images) from the user loaded jars. Heres is the structure: My Server: game.jar containing game.class images.class ... image1.png (...) Local: user.jar containing: user.class extends game userimage.png The extension is loaded via Greasemonkey, it modifies the "archive" attribute to "/home/username/user.jar, game.jar" and the "code" attribute to "user.class". The user should be able to overwrite already defined images. If the image does not exist in game.jar, it is loaded correctly from user.jar. But the images loaded early in the game are always loaded from the game.jar, others seem to be overwritten correctly by the user. Is there a way to make sure they are always loaded in the correct order? This might be because of some caching mechanism. Because Greasemonkey removes the game from the page, changes the archive and code and reinsert it, the game is loaded without a mod for a brief second. In that time, images are loaded as expected from game jar, but those are the ones not being overwritable by the user. But how to avoid it? Another thing: If I overwrite the "run" method in user.class, the game is unable to load any image at all. Not from the user.jar and not from the game.jar. Java doesn't find the image, as the URL object "getClass().getResource(imagename)" returns with null. I tried to overwrite the image.class, but that doesn't fix the problem, unless I overwrite every class from game.class involved into calling the image.class

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  • How can I securely check if a username is already taken?

    - by Geo
    I have a form where someone can create a new user. I'd like to add some AJAX to check if a username is taken, as soon as the input field loses focus. I'm not really sure how to go about this, as this could pave the way to bruteforce attack, since you could check for any username and see whether or not it exists. Any suggestions?

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