USN-5825-2: PAM regressions
6 February 2023
USN-5825-1 caused some minor regressions in PAM.
Releases
Packages
- pam - Pluggable Authentication Modules
Details
USN-5825-1 fixed vulnerabilities in PAM. Unfortunately that update was
incomplete and could introduce a regression. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that PAM did not correctly restrict login from an IP
address that is not resolvable via DNS. An attacker could possibly use this
issue to bypass authentication.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 22.10
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
-
libpam-modules
-
1.1.8-3.2ubuntu2.3+esm4
Available with Ubuntu Pro
Ubuntu 14.04
-
libpam-modules
-
1.1.8-1ubuntu2.2+esm3
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.