The remote host is missing an update to cron announced via advisory USN-778-1.

The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: cron 3.0pl1-92ubuntu1.1 Ubuntu 8.04 LTS: cron 3.0pl1-100ubuntu2.1 Ubuntu 8.10: cron 3.0pl1-104+ubuntu5.1 Ubuntu 9.04: cron 3.0pl1-105ubuntu1.1 In general, a standard system upgrade is sufficient to effect the necessary changes. https://secure1.securityspace.com/smysecure/catid.html?in=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 by CVE-2006-2607.