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  • PAM module for authentication by IP or other password-disabling module

    - by Robin Rosenberg
    I'm looking for a Linux pam module that accepts any password for connections from a specific IP. I don't want to disable passwords completely. I need it for migration from one imap server to another (cyrus to zimbra) without knowing every password. I used such a module some six years ago. That was for imap migration too. Unfortunately I cannot recall the name of the module and can't find it by other means either. Any pointers?

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  • How can I avoid hard-coding YubiKey user identities into the PAM stack?

    - by CodeGnome
    The Yubico PAM Module seems to require changes to the PAM stack for each user that will be authenticated with a YubiKey. Specifically, it seems that each user's client identity must be added to the right PAM configuration file before the user can be authenticated. While it makes sense to add authorized keys to an authentication database such as /etc/yubikey_mappings or ~/.yubico/authorized_yubikeys, it seems like a bad practice to have to edit the PAM stack itself for each individual user. I would definitely like to avoid having to hard-code user identities into the PAM stack this way. So, is it possible to avoid hard-coding the id parameter to the pam_yubico.so module itself? If not, are there any other PAM modules that can leverage YubiKey authentication without hard-coding the stack?

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  • How to get full control of umask/PAM/permissions?

    - by plua
    OUR SITUATION Several people from our company log in to a server and upload files. They all need to be able to upload and overwrite the same files. They have different usernames, but are all part of the same group. However, this is an internet server, so the "other" users should have (in general) just read-only access. So what I want to have is these standard permissions: files: 664 directories: 771 My goal is that all users do not need to worry about permissions. The server should be configured in such a way that these permissions apply to all files and directories, newly created, copied, or over-written. Only when we need some special permissions we'd manually change this. We upload files to the server by SFTP-ing in Nautilus, by mounting the server using sshfs and accessing it in Nautilus as if it were a local folder, and by SCP-ing in the command line. That basically covers our situation and what we aim to do. Now, I have read many things about the beautiful umask functionality. From what I understand umask (together with PAM) should allow me to do exactly what I want: set standard permissions for new files and directories. However, after many many hours of reading and trial-and-error, I still do not get this to work. I get many unexpected results. I really like to get a solid grasp of umask and have many question unanswered. I will post these questions below, together with my findings and an explanation of my trials that led to these questions. Given that many things appear to go wrong, I think that I am doing several things wrong. So therefore, there are many questions. NOTE: I am using Ubuntu 9.10 and therefore can not change the sshd_config to set the umask for the SFTP server. Installed SSH OpenSSH_5.1p1 Debian-6ubuntu2 < required OpenSSH 5.4p1. So here go the questions. 1. DO I NEED TO RESTART FOR PAM CHANGS TO TAKE EFFECT? Let's start with this. There were so many files involved and I was unable to figure out what does and what does not affect things, also because I did not know whether or not I have to restart the whole system for PAM changes to take effect. I did do so after not seeing the expected results, but is this really necessary? Or can I just log out from the server and log back in, and should new PAM policies be effective? Or is there some 'PAM' program to reload? 2. IS THERE ONE SINGLE FILE TO CHANGE THAT AFFECTS ALL USERS FOR ALL SESSIONS? So I ended up changing MANY files, as I read MANY different things. I ended up setting the umask in the following files: ~/.profile -> umask=0002 ~/.bashrc -> umask=0002 /etc/profile -> umask=0002 /etc/pam.d/common-session -> umask=0002 /etc/pam.d/sshd -> umask=0002 /etc/pam.d/login -> umask=0002 I want this change to apply to all users, so some sort of system-wide change would be best. Can it be achieved? 3. AFTER ALL, THIS UMASK THING, DOES IT WORK? So after changing umask to 0002 at every possible place, I run tests. ------------SCP----------- TEST 1: scp testfile (which has 777 permissions for testing purposes) server:/home/ testfile 100% 4 0.0KB/s 00:00 Let's check permissions: user@server:/home$ ls -l total 4 -rwx--x--x 1 user uploaders 4 2011-02-05 17:59 testfile (711) ---------SSH------------ TEST 2: ssh server user@server:/home$ touch anotherfile user@server:/home$ ls -l total 4 -rw-rw-r-- 1 user uploaders 0 2011-02-05 18:03 anotherfile (664) --------SFTP----------- Nautilus: sftp://server/home/ Copy and paste newfile from client to server (777 on client) TEST 3: user@server:/home$ ls -l total 4 -rwxrwxrwx 1 user uploaders 3 2011-02-05 18:05 newfile (777) Create a new file through Nautilus. Check file permissions in terminal: TEST 4: user@server:/home$ ls -l total 4 -rw------- 1 user uploaders 0 2011-02-05 18:06 newfile (600) I mean... WHAT just happened here?! We should get 644 every single time. Instead I get 711, 777, 600, and then once 644. And the 644 is only achieved when creating a new, blank file through SSH, which is the least probable scenario. So I am asking, does umask/pam work after all? 4. SO WHAT DOES IT MEAN TO UMASK SSHFS? Sometimes we mount a server locally, using sshfs. Very useful. But again, we have permissions issues. Here is how we mount: sshfs -o idmap=user -o umask=0113 user@server:/home/ /mnt NOTE: we use umask = 113 because apparently, sshfs starts from 777 instead of 666, so with 113 we get 664 which is the desired file permission. But what now happens is that we see all files and directories as if they are 664. We browse in Nautilus to /mnt and: Right click - New File (newfile) --- TEST 5 Right click - New Folder (newfolder) --- TEST 6 Copy and paste a 777 file from our local client --- TEST 7 So let's check on the command line: user@client:/mnt$ ls -l total 8 -rw-rw-r-- 1 user 1007 3 Feb 5 18:05 copyfile (664) -rw-rw-r-- 1 user 1007 0 Feb 5 18:15 newfile (664) drw-rw-r-- 1 user 1007 4096 Feb 5 18:15 newfolder (664) But hey, let's check this same folder on the server-side: user@server:/home$ ls -l total 8 -rwxrwxrwx 1 user uploaders 3 2011-02-05 18:05 copyfile (777) -rw------- 1 user uploaders 0 2011-02-05 18:15 newfile (600) drwx--x--x 2 user uploaders 4096 2011-02-05 18:15 newfolder (711) What?! The REAL file permissions are very different from what we see in Nautilus. So does this umask on sshfs just create a 'filter' that shows unreal file permissions? And I tried to open a file from another user but the same group that had real 600 permissions but 644 'fake' permissions, and I could still not read this, so what good is this filter?? 5. UMASK IS ALL ABOUT FILES. BUT WHAT ABOUT DIRECTORIES? From my tests I can see that the umask that is being applied also somehow influences the directory permissions. However, I want my files to be 664 (002) and my directories to be 771 (006). So is it possible to have a different umask for directories? 6. PERHAPS UMASK/PAM IS REALLY COOL, BUT UBUNTU IS JUST BUGGY? On the one hand, I have read topics of people that have had success with PAM/UMASK and Ubuntu. On the other hand, I have found many older and newer bugs regarding umask/PAM/fuse on Ubuntu: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/241198 https://bugs.launchpad.net/ubuntu/+source/fuse/+bug/239792 https://bugs.launchpad.net/ubuntu/+source/pam/+bug/253096 https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/549172 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=314796 So I do not know what to believe anymore. Should I just give up? Would ACL solve all my problems? Or do I have again problems using Ubuntu? One word of caution with backups using tar. Red Hat /Centos distributions support acls in the tar program but Ubuntu does not support acls when backing up. This means that all acls will be lost when you create a backup. I am very willing to upgrade to Ubuntu 10.04 if that would solve my problems too, but first I want to understand what is happening.

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  • Requiring SSH-key Login Via PAM From Specific IP Ranges

    - by Sean M
    I need to be able to access my server (Ubuntu 8.04 LTS) from remote sites, but I'd like to worry a bit less about password complexity. Thus, I'd like to require that SSH keys be used for login instead of name/password. However, I still have a lot to learn about security, and having already badly broken a test box when I was trying to set this up, I'm acutely aware of the chance of screwing myself while trying to accomplish this. So I have a second goal: I'd like to require that certain IP ranges (e.g. 10.0.0.0/8) may log in with name/password, but everyone else must use an SSH key to log in. How can I satisfy both of these goals? There already exists a very similar question here, but I can't quite figure out how to get to what I want from that information. Current tactic: reading through the PAM documentation (pam_access looks promising) and looking at /etc/ssh/sshd_config.

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  • PPTPD with PAM authentication?

    - by Richard
    I need a VPN solution for my company. One requirement is to be able to use the built-in windows VPN client. We are running a Debian Etch server. I've managed to set up PPTPD but the authentication is based on the chap-secrets file. We already have all the user accounts set up on the server, so it'd be nice to use PAM authentication to get user/pass directly from the unix login. Is this possible to achieve and how? If not, is there any other VPN solution that can do this? Don't tell me OpenVPN, it needs additional software to be installed on the Windows machines. :)

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  • pam_exec.so PAM module does not export variable PAM_USER as stated in the documentation

    - by davidparks21
    I'm trying to use the pam_exec.so PAM module to execute a script which needs to know the username/password coming from the application (OpenVPN in this case). I have a script that executes printenv >>afile, but I don't see all the environment variables that the man pages states that pam_exec.so exports (namely PAM_USER I think), I only see the following: PAM_SERVICE=openvpn PAM_TYPE=auth PWD=/usr/local/openvpn/bin SHLVL=1 A__z="*SHLVL I do successfully pick up the password off of STDIN and output it with this same script. But for the life of me I can't get the username. Any thoughts on what I should try next?

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  • How to ask memcached auth connection by sasl and pam?

    - by user199216
    I use memcached in a untrust network, so I try to use sasl and pam to auth connection to memcached. I installed sasl and pam module, compiled and installed memcached with sasl enabled. Also I created db and table for pam user. I run: $ sudo testsaslauthd -u tester -p abc123 -s /etc/pam.d/memcached 0: OK "Success." where the tester and abc123 is the authed user in db, which I inserted. But my python script cannot be authed, always authentication failed returned. It seems it dose not use pam to authentication, still use sasldb, because when I add user by: $ sudo saslpasswd2 -a memcached -c tester and input password: abc123, It can passed. Python script: client = bmemcached.Client(('localhost:11211'), 'tester', 'abc123') and error: bmemcached.exceptions.MemcachedException: Code: 32 Message: Auth failure. memcached log: authenticated() in cmd 0x21 is true mech: ``PLAIN'' with 14 bytes of data SASL (severity 2): Password verification failed sasl result code: -20 Unknown sasl response: -20 >30 Writing an error: Auth failure. >30 Writing bin response: no auth log found in: /var/log/auth.log Configurations: vi /etc/default/saslauthd MECHANISMS="pam" vi /etc/pam.d/memcached auth sufficient pam_mysql.so user=sasl passwd=abc123 host=localhost db=sasldb table=sasl_user usercolumn=user_name passwdcolumn=password crypt=0 sqllog=1 verbose=1 account required pam_mysql.so user=sasl passwd=abc123 host=localhost db=sasldb table=sasl_user usercolumn=user_name passwdcolumn=password crypt=0 sqllog=1 verbose=1 vi /etc/sasl2/memcached.conf pwcheck_method: saslauthd Do I make my question clear, english is not my native language, sorry! Any tips will be thankful!

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  • ProFTPD / PAM issues with new centos/virtualmin install

    - by iamthewit
    I just installed CentOS 5.4 on a rackspace cloud server and installed virtualmin which all seemed to go fine. The only problem I have is that I can not access the virtual servers directories via FTP. I get the following from filezilla: Status: Connecting to 1.1.1.1:21... Status: Connection established, waiting for welcome message... Response: 220 FTP Server ready. Command: USER username Response: 331 Password required for username. Command: PASS *************** Response: 230 User username logged in. Status: Connected Status: Retrieving directory listing... Command: PWD Response: 257 "/" is current directory. Command: TYPE I Response: 200 Type set to I Command: PASV Response: 227 Entering Passive Mode (1,1,1,1,216,214) Command: LIST Error: Connection timed out Error: Failed to retrieve directory listing and I get this from my /var/secure/log file Sep 22 19:40:42 stickeeserver proftpd: pam_unix(proftpd:session): session opened for user username by (uid=0) Sep 22 19:40:42 server proftpd[14051]: 94.136.40.82 (::ffff:217.207.31.60[::ffff:217.207.31.60]) - USER nastypasty: Login successful. Sep 22 19:40:42 server proftpd[14051]: 94.136.40.82 (::ffff:217.207.31.60[::ffff:217.207.31.60]) - Preparing to chroot to directory '/home/username' Sep 22 19:40:42 server proftpd[14051]: 94.136.40.82 (::ffff:217.207.31.60[::ffff:217.207.31.60]) - mod_delay/0.5: delaying for 728 usecs Sep 22 19:40:42 server proftpd[14051]: 94.136.40.82 (::ffff:217.207.31.60[::ffff:217.207.31.60]) - error setting IPV6_V6ONLY: Protocol not available Any help would be greatly appreciated, I'm not totally new to Linux but it's not my strongest subject. I do like to know exactly why problems occur though and how exactly to fix them so the more detail the better! cheers

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  • ProFTPD / PAM issues with new centos/virtualmin install

    - by iamthewit
    Hi All, I just installed CentOS 5.4 on a rackspace cloud server and installed virtualmin which all seemed to go fine. The only problem I have is that I can not access the virtual servers directories via FTP. I get the following from filezilla: Status: Connecting to 1.1.1.1:21... Status: Connection established, waiting for welcome message... Response: 220 FTP Server ready. Command: USER username Response: 331 Password required for username. Command: PASS ******* Response: 230 User username logged in. Status: Connected Status: Retrieving directory listing... Command: PWD Response: 257 "/" is current directory. Command: TYPE I Response: 200 Type set to I Command: PASV Response: 227 Entering Passive Mode (1,1,1,1,216,214) Command: LIST Error: Connection timed out Error: Failed to retrieve directory listing and I get this from my /var/secure/log file Sep 22 19:40:42 stickeeserver proftpd: pam_unix(proftpd:session): session opened for user username by (uid=0) Sep 22 19:40:42 server proftpd[14051]: 94.136.40.82 (::ffff:217.207.31.60[::ffff:217.207.31.60]) - USER nastypasty: Login successful. Sep 22 19:40:42 server proftpd[14051]: 94.136.40.82 (::ffff:217.207.31.60[::ffff:217.207.31.60]) - Preparing to chroot to directory '/home/username' Sep 22 19:40:42 server proftpd[14051]: 94.136.40.82 (::ffff:217.207.31.60[::ffff:217.207.31.60]) - mod_delay/0.5: delaying for 728 usecs Sep 22 19:40:42 server proftpd[14051]: 94.136.40.82 (::ffff:217.207.31.60[::ffff:217.207.31.60]) - error setting IPV6_V6ONLY: Protocol not available Any help would be greatly appreciated, I'm not totally new to Linux but it's not my strongest subject. I do like to know exactly why problems occur though and how exactly to fix them so the more detail the better! cheers

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  • cron+pam heavily spamming my logs

    - by Lo'oris
    Two times every minute I get this in auth.log: May 12 15:21:01 ruptai CRON[25303]: pam_unix(cron:session): session opened for user root by (uid=0) May 12 15:21:01 ruptai CRON[25303]: pam_unix(cron:session): session closed for user root This never stops, two times every minute, every minute of every day. I've no idea what it is, I would just to stop it from pointless logging this stuff. This has been going on for ages so I can't recall when it started. OS is debian stable. Btw, I've found questions on google but no answers

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  • OpenID PAM module

    - by Harvey Kwok
    I am looking for a PAM module that can use OpenID to do the authentication. My idea is that I want to logon my Linux box using my gmail account and password. I found there is a open source project in Google Code which seems to be doing the things I want but I don't see any code available for download. I saw there are so many examples or implementations but they are all about web apps. Is there any non-web based OpenID applications in the world? Is it technically possible to make a non-web based OpenID application? I naively think that it should be possible. I can emulate whatever packets the browser send out to the OpenID provider and get back the result. As long as my Linux box is connected to the Internet, I should be able to use my OpenID to login. Appreciate any comments, suggestions or pointers on how to make an OpenID PAM module. Thanks!

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  • python-pam & pam_time module -- possible to check a user without password?

    - by medigeek
    I've looked at the example script of python-pam and linux pam pages, but it's a bit confusing, at least for a beginner in PAM (that I am): http://www.kernel.org/pub/linux/libs/pam/Linux-PAM-html/Linux-PAM_ADG.html http://packages.ubuntu.com/python-pam Is it possible to check if a user has or does not have access to login, without entering password? I would like to create a script that root can use to check if a user is allowed or not to login to the system. If so, can someone post an example that checks if the user is allowed against pam_time? Thanks in advance!

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  • /usr/bin/sshd isn't linked against PAM on one of my systems. What is wrong and how can I fix it?

    - by marc.riera
    Hi, I'm using AD as my user account server with ldap. Most of the servers run with UsePam yes except this one, it has lack of pam support on sshd. root@linserv9:~# ldd /usr/sbin/sshd linux-vdso.so.1 => (0x00007fff621fe000) libutil.so.1 => /lib/libutil.so.1 (0x00007fd759d0b000) libz.so.1 => /usr/lib/libz.so.1 (0x00007fd759af4000) libnsl.so.1 => /lib/libnsl.so.1 (0x00007fd7598db000) libcrypto.so.0.9.8 => /usr/lib/libcrypto.so.0.9.8 (0x00007fd75955b000) libcrypt.so.1 => /lib/libcrypt.so.1 (0x00007fd759323000) libc.so.6 => /lib/libc.so.6 (0x00007fd758fc1000) libdl.so.2 => /lib/libdl.so.2 (0x00007fd758dbd000) /lib64/ld-linux-x86-64.so.2 (0x00007fd759f0e000) I have this packages installed root@linserv9:~# dpkg -l|grep -E 'pam|ssh' ii denyhosts 2.6-2.1 an utility to help sys admins thwart ssh hac ii libpam-modules 0.99.7.1-5ubuntu6.1 Pluggable Authentication Modules for PAM ii libpam-runtime 0.99.7.1-5ubuntu6.1 Runtime support for the PAM library ii libpam-ssh 1.91.0-9.2 enable SSO behavior for ssh and pam ii libpam0g 0.99.7.1-5ubuntu6.1 Pluggable Authentication Modules library ii libpam0g-dev 0.99.7.1-5ubuntu6.1 Development files for PAM ii openssh-blacklist 0.1-1ubuntu0.8.04.1 list of blacklisted OpenSSH RSA and DSA keys ii openssh-client 1:4.7p1-8ubuntu1.2 secure shell client, an rlogin/rsh/rcp repla ii openssh-server 1:4.7p1-8ubuntu1.2 secure shell server, an rshd replacement ii quest-openssh 5.2p1_q13-1 Secure shell root@linserv9:~# What I'm doing wrong? thanks. Edit: root@linserv9:~# cat /etc/pam.d/sshd # PAM configuration for the Secure Shell service # Read environment variables from /etc/environment and # /etc/security/pam_env.conf. auth required pam_env.so # [1] # In Debian 4.0 (etch), locale-related environment variables were moved to # /etc/default/locale, so read that as well. auth required pam_env.so envfile=/etc/default/locale # Standard Un*x authentication. @include common-auth # Disallow non-root logins when /etc/nologin exists. account required pam_nologin.so # Uncomment and edit /etc/security/access.conf if you need to set complex # access limits that are hard to express in sshd_config. # account required pam_access.so # Standard Un*x authorization. @include common-account # Standard Un*x session setup and teardown. @include common-session # Print the message of the day upon successful login. session optional pam_motd.so # [1] # Print the status of the user's mailbox upon successful login. session optional pam_mail.so standard noenv # [1] # Set up user limits from /etc/security/limits.conf. session required pam_limits.so # Set up SELinux capabilities (need modified pam) # session required pam_selinux.so multiple # Standard Un*x password updating. @include common-password Edit2: UsePAM yes fails With this configuration ssh fails to start : root@linserv9:/home/admmarc# cat /etc/ssh/sshd_config |grep -vE "^[ \t]*$|^#" Port 22 Protocol 2 ListenAddress 0.0.0.0 RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile .ssh/authorized_keys ChallengeResponseAuthentication yes UsePAM yes Subsystem sftp /usr/lib/sftp-server root@linserv9:/home/admmarc# The error it gives is as follows root@linserv9:/home/admmarc# /etc/init.d/ssh start * Starting OpenBSD Secure Shell server sshd /etc/ssh/sshd_config: line 75: Bad configuration option: UsePAM /etc/ssh/sshd_config: terminating, 1 bad configuration options ...fail! root@linserv9:/home/admmarc#

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  • error in auth.log but can login; LDAP/PAM

    - by Peter
    I have a server running OpenLDAP. When I start a ssh-session I can log in without problems, but an error appears in the logs. This only happens when I log in with a LDAP account (so not with a system account such as root). Any help to eliminate these errors would be much appreciated. The relevant piece from /var/log/auth.log sshd[6235]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=example.com user=peter sshd[6235]: Accepted password for peter from 192.168.1.2 port 2441 ssh2 sshd[6235]: pam_unix(sshd:session): session opened for user peter by (uid=0) pam common-session session [default=1] pam_permit.so session required pam_unix.so session optional pam_ldap.so session required pam_mkhomedir.so skel=/etc/skel umask=0022 session required pam_limits.so session required pam_unix.so session optional pam_ldap.so pam common-auth auth [success=1 default=ignore] pam_ldap.so auth required pam_unix.so nullok_secure use_first_pass auth required pam_permit.so session required pam_mkhomedir.so skel=/etc/skel umask=0022 silent auth sufficient pam_unix.so nullok_secure use_first_pass auth requisite pam_succeed_if.so uid >= 1000 quiet auth sufficient pam_ldap.so use_first_pass auth required pam_deny.so pam common-account account [success=2 new_authtok_reqd=done default=ignore] pam_ldap.so account [success=1 default=ignore] pam_unix.so account required pam_unix.so account sufficient pam_succeed_if.so uid < 1000 quiet account [default=bad success=ok user_unknown=ignore] pam_ldap.so account required pam_permit.so account sufficient pam_ldap.so account sufficient pam_unix.so

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  • Dealing with LDAP failure when using it for PAM/NSS?

    - by Insyte
    I use a redundant pair of OpenLDAP servers for PAM auth and directory services via NSS. It's been 100% reliable so far, but nothing runs flawlessly forever. What steps should I take now so I have a fighting chance of recovering from failure of the LDAP server(s)? In my informal testing, it appears that even already authenticated shells are largely useless as all username/uid lookups hang until the directory server comes back. So far I've come up with only two things: Do not use NSS-LDAP and PAM-LDAP on the LDAP servers themselves. Create a root-level account on all boxes that only accepts publickey authentication from our local subnet and protect that key well. I'm not sure how much good this would do me as once I'm logged in, I suspect I wouldn't be able to accomplish anything since all the userid lookups would be hanging. Any other suggestions?

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  • Using pam_python in a script running with mod_python

    - by markys
    Hi ! I would like to develop a web interface to allow users of a Linux system to do certain tasks related to their account. I decided to write the backend of the site using Python and mod_python on Apache. To authenticate the users, I thought I could use python_pam to query the PAM service. I adapted the example bundled with the module and got this: # out is the output stream used to print debug def auth(username, password, out): def pam_conv(aut, query_list, user_data): out.write("Query list: " + str(query_list) + "\n") # List to store the responses to the different queries resp = [] for item in query_list: query, qtype = item # If PAM asks for an input, give the password if qtype == PAM.PAM_PROMPT_ECHO_ON or qtype == PAM.PAM_PROMPT_ECHO_OFF: resp.append((str(password), 0)) elif qtype == PAM.PAM_PROMPT_ERROR_MSG or qtype == PAM.PAM_PROMPT_TEXT_INFO: resp.append(('', 0)) out.write("Our response: " + str(resp) + "\n") return resp # If username of password is undefined, fail if username is None or password is None: return False service = 'login' pam_ = PAM.pam() pam_.start(service) # Set the username pam_.set_item(PAM.PAM_USER, str(username)) # Set the conversation callback pam_.set_item(PAM.PAM_CONV, pam_conv) try: pam_.authenticate() pam_.acct_mgmt() except PAM.error, resp: out.write("Error: " + str(resp) + "\n") return False except: return False # If we get here, the authentication worked return True My problem is that this function does not behave the same wether I use it in a simple script or through mod_python. To illustrate this, I wrote these simple cases: my_username = "markys" my_good_password = "lalala" my_bad_password = "lololo" def handler(req): req.content_type = "text/plain" req.write("1- " + str(auth(my_username,my_good_password,req) + "\n")) req.write("2- " + str(auth(my_username,my_bad_password,req) + "\n")) return apache.OK if __name__ == "__main__": print "1- " + str(auth(my_username,my_good_password,sys.__stdout__)) print "2- " + str(auth(my_username,my_bad_password,sys.__stdout__)) The result from the script is : Query list: [('Password: ', 1)] Our response: [('lalala', 0)] 1- True Query list: [('Password: ', 1)] Our response: [('lololo', 0)] Error: ('Authentication failure', 7) 2- False but the result from mod_python is : Query list: [('Password: ', 1)] Our response: [('lalala', 0)] Error: ('Authentication failure', 7) 1- False Query list: [('Password: ', 1)] Our response: [('lololo', 0)] Error: ('Authentication failure', 7) 2- False I don't understand why the auth function does not return the same value given the same inputs. Any idea where I got this wrong ? Here is the original script, if that could help you. Thanks a lot !

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  • Configuring PAM with pam_mount; getting a dlopen() with an HX_Init error

    - by Jamie
    I'm trying to get automounting upon login working on Ubuntu 10.03 Beta 2. I didn't find a package for pam_mount, so I ended downloading it and building it. This required: sudo apt-get install build-essential pkg-config libxml2-dev libssl-dev libpam-dev Additionally, the libHX-dev is required but as of yesterday (23/4/2010) the package version provided (3.2) wasn't up to snuff (3.4) so I downloaded, compiled and installed that too. cd ./pam_mount-1.36/ && ./configure && make && sudo make install When I tried it (pam_mount) I got this in my auth log: Apr 23 12:18:02 ubuntu sshd[1195]: PAM unable to dlopen(/lib/security/pam_mount.so): /lib/security/pam_mount.so: undefined symbol: HX_init Apr 23 12:18:02 ubuntu sshd[1195]: PAM adding faulty module: /lib/security/pam_mount.so Apr 23 12:18:06 ubuntu sshd[1195]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.168.20.182 user=jrisk Apr 23 12:18:06 ubuntu sshd[1195]: pam_winbind(sshd:auth): getting password (0x00000388) Apr 23 12:18:06 ubuntu sshd[1195]: pam_winbind(sshd:auth): pam_get_item returned a password Apr 23 12:18:06 ubuntu sshd[1195]: pam_winbind(sshd:auth): user 'jrisk' granted access Apr 23 12:18:06 ubuntu sshd[1195]: Accepted password for jrisk from 192.168.20.182 port 4369 ssh2 Apr 23 12:18:06 ubuntu sshd[1195]: pam_unix(sshd:session): session opened for user jrisk by (uid=0) What do I need to do get HX_Init into the system? This is related to an answer I previously got here.

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  • How to merge .rpmnew files in Pluggable Authentication Modules (PAM)?

    - by Question Overflow
    A few .rpmnew files are being created after performing an upgrade of the Fedora OS. The normal procedure for merging .rpmnew files into the original ones is to compare the differences, make the necessary changes to the configuration on the .rpmnew files, and replace the original files with the new ones. However, the files contained in /etc/pam.d are links to files with same the filename appended with -ac, example: password-auth links to password-auth-ac and has password-auth.rpmnew as upgrade. How do I go about merging these files?

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  • Can I disable Pam Loginuid? Can I find out options used to configure kernel?

    - by dunxd
    I am getting a lot of the following types of error in my secure log on a CentOS 5.4 server: crond[10445]: pam_loginuid(crond:session): set_loginuid failed opening loginuid sshd[10473]: pam_loginuid(sshd:session): set_loginuid failed opening loginuid I've seen discussion of this being caused when using a non-standard kernel without the correct CONFIG_AUDIT and CONFIG_AUDITSYSCALL options set. Where this is the case, it is advised to comment out some lines in the pam.d config files. I am running a Virtual Private Server where I need to use the kernel provided by the supplier. Is there a way to find out what options they used to configure the kernel? I want to verify if the above is the cause. If this turns out not to be the cause, what are the risk of disabling pam_loginuid for crond and sshd?

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  • How can I change the flow through this PAM (programmable authentication module) file?

    - by Jamie
    I'd like the PAM module to skip the pam_mount.so line when a unix login succeeds. I've tried various things including: auth [success=2 default=ignore] pam_unix.so nullok_secure auth [success=2 default=ignore] pam_winbind.so krb5_auth krb5_ccache_type=FILE cached_login try_first_pass auth requisite pam_deny.so auth requisite pam_permit.so auth required pam_permit.so auth optional pam_mount.so But can't get it to work. Conversely, when a session shuts down, how can I modify the following os that an unmount command (via pam_mount.so) is avoided during a unix login? session [default=1] pam_permit.so session requisite pam_deny.so session required pam_permit.so session required pam_unix.so session optional pam_winbind.so session optional pam_mount.so

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  • PAM with KRB5 to Active Directory - How to prevent update of AD password?

    - by Ex Umbris
    I have a working Fedora 9 system that's set up to authenticate users via PAM - krb5 - Active Directory. I'm migrating this to Fedora 14, and everything works, but it's working too well :-) On Fedora 9, if a Linux user updated their password, it did not propagate to their Active Directory account. On Fedora 14, it is changing their A/D password. The problem is I don't want A/D to be updated. Here's my password-auth-ac: auth required pam_env.so auth sufficient pam_unix.so nullok try_first_pass auth requisite pam_succeed_if.so uid >= 500 quiet auth sufficient pam_krb5.so use_first_pass auth required pam_deny.so account required pam_unix.so account sufficient pam_localuser.so account sufficient pam_succeed_if.so uid < 500 quiet account [default=bad success=ok user_unknown=ignore] pam_krb5.so account required pam_permit.so password requisite pam_cracklib.so try_first_pass retry=3 type= password sufficient pam_unix.so sha512 shadow nullok try_first_pass use_authtok password sufficient pam_krb5.so use_authtok password required pam_deny.so session optional pam_keyinit.so revoke session required pam_limits.so -session optional pam_systemd.so session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid session required pam_unix.so session optional pam_krb5.so I tried removing the line password sufficient pam_krb5.so use_authtok But then when attempting to change the Linux password, if they provide their A/D password for the authentication prompt, they get the error: passwd: Authentication token manipulation error What I want to achieve is: Allow authentication with either the A/D or Linux password (the Linux password is a fall-back for certain sysadmin users in case A/D is unavailable for some reason). This is working now. Allow users to change their Linux passwords without affecting their A/D passwords. Is this possible?

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  • Getting PAM/user info into php - something like Net_Finger instead of a db?

    - by digitaltoast
    I've got a very small user group who just need to login, upload, check and then move specific files to a different area when ready. Right now, I use the nginx PAM auth module to log them in against their unix accounts. As their login is their home directory, I've already got the info to send the uploads to the right area - one line of php and no database needed. But I'm maintaining a separate DB just so PHP can welcome them, grab their email and send them an email when processed. Yes, sure I could use nosql or sqlite instead so as to not need a whole mysql install. But it occurred to me that as I've got all these blank user fields for phone numbers I could populate with any data, that I could use something like php's Net_Finger. Which failed for me with: sudo pear install Net_Finger Starting to download Net_Finger-1.0.1.tgz (1,618 bytes) ....done: 1,618 bytes could not extract the package.xml file from "/build/buildd/php5-5.5.9+dfsg/pear-build-download/Net_Finger-1.0.1.tgz" Download of "pear/Net_Finger" succeeded, but it is not a valid package archive Error: cannot download "pear/Net_Finger" At which point I thought I'd stop, and take a ServerFault reality check - is this a really bad/dangerous/stupid idea just to stop me having to maintain details in two places rather than one? It there a better way? Googling shows that it's not an oft-asked thing, so perhaps with good reason?

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  • pam_tally2 causing unwanted lockouts with SCOM or Nervecenter

    - by Chris
    We use pam_tally2 in our system-auth config file which works fine for users. With services such as SCOM or Nervecenter it causes lockouts. Same behavior on RHEL5 and RHEL6 This is /etc/pam.d/nervecenter #%PAM-1.0 # Sample NerveCenter/RHEL6 PAM configuration # This PAM registration file avoids use of the deprecated pam_stack.so module. auth include system-auth account required pam_nologin.so account include system-auth and this is /etc/pam.d/system-auth auth sufficient pam_centrifydc.so auth requisite pam_centrifydc.so deny account sufficient pam_centrifydc.so account requisite pam_centrifydc.so deny session required pam_centrifydc.so homedir password sufficient pam_centrifydc.so try_first_pass password requisite pam_centrifydc.so deny auth required pam_tally2.so deny=6 onerr=fail auth required pam_env.so auth sufficient pam_unix.so nullok try_first_pass auth requisite pam_succeed_if.so uid >= 500 quiet auth required pam_deny.so account required pam_unix.so account sufficient pam_succeed_if.so uid < 500 quiet account required pam_permit.so password requisite pam_cracklib.so try_first_pass retry=3 minclass=3 minlen=8 lcredit=1 ucredit=1 dcredit=1 ocredit=1 difok=1 password sufficient pam_unix.so sha512 shadow try_first_pass use_authtok remember=8 password required pam_deny.so session optional pam_keyinit.so revoke session required pam_limits.so session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid session required pam_unix.so The login does work but it also triggers the pam_tally counter up until it hits 6 "false" logins. Is there any pam-ninjas around that could spot the issue? Thanks.

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  • pam_ldap.so before pam_unix.so? Is it ever possible?

    - by user1075993
    we have a couple of servers with PAM+LDAP. The configuration is standard (see http://arthurdejong.org/nss-pam-ldapd/setup or http://wiki.debian.org/LDAP/PAM). For example, /etc/pam.d/common-auth contains: auth sufficient pam_unix.so nullok_secure auth requisite pam_succeed_if.so uid >= 1000 quiet auth sufficient pam_ldap.so use_first_pass auth requiered pam_deny.so And, of course, it works for both ldap and local users. But every login goes first to pam_unix.so, fails, and only then tries pam_ldap.so successfully. As a result, we have a well-known failure message for every single ldap user login: pam_unix(<some_service>:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=<some_host> user=<some_user> I have up to 60000 of such log messages per day and I want to change the configuration so, that PAM will try ldap authentication first, and only if it fails - try pam_unix.so (I think it can improve the i/o performance of the server). But if I change common-auth to the following: auth sufficient pam_ldap.so use_first_pass auth sufficient pam_unix.so nullok_secure auth requiered pam_deny.so Then I simply can't login anymore with local (non-ldap) user (e.g., via ssh). Does somebody knows the right configuration? Why Debian and nss-pam-ldapd have pam_unix.so at first by default? Is there really no way to change it? Thank you in advance. P.S. I don't want to disable logs, but want to set ldap authentication on the first place.

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