VULHUB ™

Debian Security Advisory - The version of Vixie Cron shipped with Debian GNU/Linux 2.2 is vulnerable to a local attack, discovered by Michal Zalewski. Several problems, including insecure permissions on temporary files and race conditions in their deletion, allowed attacks from a denial of service (preventing the editing of crontabs) to an escalation of privilege (when another user edited their crontab). As a temporary fix, "chmod go-rx /var/spool/cron/crontabs" prevents the only available exploit; however, it does not address the problem - upgrade is needed.

Debian Security Advisory - The version of Vixie Cron shipped with Debian GNU/Linux 2.2 is vulnerable to a local attack, discovered by Michal Zalewski. Several problems, including insecure permissions on temporary files and race conditions in their deletion, allowed attacks from a denial of service (preventing the editing of crontabs) to an escalation of privilege (when another user edited their crontab). As a temporary fix, "chmod go-rx /var/spool/cron/crontabs" prevents the only available exploit; however, it does not address the problem - upgrade is needed.