Syslog-ng: Chroot escape

Background

Syslog-ng is a flexible and scalable system logger.

Description

Florian Grandel reported that Syslog-ng does not call chdir() before chroot() which leads to an inherited file descriptor to the current working directory.

Impact

A local attacker might exploit a separate vulnerability in Syslog-ng and use this vulnerability to escape the chroot jail.

Workaround

There is no known workaround at this time.

Resolution

All Syslog-ng 2.0 users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-admin/syslog-ng-2.0.10"

All Syslog-ng 2.1 users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-admin/syslog-ng-2.1.3"