Keepalived: Denial of service

Background

Keepalived is a strong & robust keepalive facility to the Linux Virtual Server project.

Description

The “pidfile_write()” function in pidfile.c in Keepalived writes PID files with insecure permissions.

Impact

A local attacker may be able to cause a Denial of Service of arbitrary processes.

Workaround

There is no known workaround at this time.

Resolution

All Keepalived users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=sys-cluster/keepalived-1.2.2-r3"