USN-778-1: cron vulnerability

Publication date

1 June 2009

Overview

cron vulnerability


Packages

Details

It was discovered that cron did not properly check the return code of
the setgid() and initgroups() system calls. A local attacker could use
this to escalate group privileges. Please note that cron versions 3.0pl1-64
and later were already patched to address the more serious setuid() check
referred to by CVE-2006-2607.

It was discovered that cron did not properly check the return code of
the setgid() and initgroups() system calls. A local attacker could use
this to escalate group privileges. Please note that cron versions 3.0pl1-64
and later were already patched to address the more serious setuid() check
referred to by CVE-2006-2607.

Update instructions

In general, a standard system upgrade is sufficient to effect 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
9.04 jaunty cron –  3.0pl1-105ubuntu1.1
8.10 intrepid cron –  3.0pl1-104+ubuntu5.1
8.04 hardy cron –  3.0pl1-100ubuntu2.1
6.06 dapper cron –  3.0pl1-92ubuntu1.1

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