USN-959-2: PAM vulnerability

Publication date

25 October 2010

Overview

Gain root by following symlinks.

Releases


Packages

  • pam - Pluggable Authentication Modules

Details

USN-959-1 fixed vulnerabilities in PAM. This update provides the
corresponding updates for Ubuntu 10.10.

Original advisory details:

Denis Excoffier discovered that the PAM MOTD module in Ubuntu did
not correctly handle path permissions when creating user file stamps.
A local attacker could exploit this to gain root privilieges.

USN-959-1 fixed vulnerabilities in PAM. This update provides the
corresponding updates for Ubuntu 10.10.

Original advisory details:

Denis Excoffier discovered that the PAM MOTD module in Ubuntu did
not correctly handle path permissions when creating user file stamps.
A local attacker could exploit this to gain root privilieges.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
10.10 maverick libpam-modules –  1.1.1-4ubuntu2

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