** Description changed: + [ Impact ] + + * In the process of bootstrapping pam for time_t, libdb-dev was + deliberately removed in salsa commit 65621d8 to allow libdb-dev to + undergo time_t transition. + * The result of that is no pam_userdb.so in libpam-modules + * The fix takes the form of correcting a build dependency, which + results in pam_userdb.so being again available. + + [ Test Plan ] + + * regression + * obtain a noble test system - I personally used a noble chroot + * adjust apt sources and ensure noble-proposed is present + * install libpam-modules 1.5.3-5ubuntu5.1 + * login to the test machine with appropriate credentials - the + literal `login` command is useful here + * userdb functionality + * start with the same test machine from the regression test + * install db5.3-util + * modify /etc/pam.d/login to comment out all `auth` lines, and add + this instead + ``` + auth requisite pam_userdb.so db=/etc/dbtest + ``` + * create a textfile named `input` that looks like + ``` + your_username + test_password - different than /etc/shadow + ``` + * `db5.3_load -T -f input -t hash /etc/dbtest.db` + * login to the test machine with your_username and the + test_password - the literal `login` command is useful here + + [ Where problems could occur ] + + * As usual, no SRU has zero risk + * Any change to pam risks problems in user logins failing, so a + basic regression test has been provided + + [ Other Info ] + + * None at this time + + original description follows + --- + The file is missing from libpam-modules. This breaks, for example, existing vsftp configs if it is configured to use pam_userdb.so Log: vsftpd: PAM unable to dlopen(pam_userdb.so): /usr/lib/security/pam_userdb.so: cannot open shared object file: No such file or directory vsftpd: PAM adding faulty module: pam_userdb.so Apparently there was a change which removed this in the past, and it might be the removal has not been undone, while the package has been released nevertheless. http://changelogs.ubuntu.com/changelogs/pool/main/p/pam/pam_1.5.3-5ubuntu5/changelog * For now remove libdb-dev so that libdb-dev can undergo time_t transition. That means this version of pam does not include pam_userdb, which makes pam unsuitable for release. - $ lsb_release -rd No LSB modules are available. Description: Ubuntu 24.04 LTS Release: 24.04 $ apt-cache policy libpam-modules libpam-modules: - Installed: 1.5.3-5ubuntu5 - Candidate: 1.5.3-5ubuntu5 - Version table: - *** 1.5.3-5ubuntu5 500 - 500 http://de.archive.ubuntu.com/ubuntu noble/main amd64 Packages - 100 /var/lib/dpkg/status + Installed: 1.5.3-5ubuntu5 + Candidate: 1.5.3-5ubuntu5 + Version table: + *** 1.5.3-5ubuntu5 500 + 500 http://de.archive.ubuntu.com/ubuntu noble/main amd64 Packages + 100 /var/lib/dpkg/status
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2064350 Title: pam_userdb.so is missing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pam/+bug/2064350/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
