Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 : cron vulnerability (USN-778-1)

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 ...