Nagios: Privilege escalation

Background

Nagios is an open source host, service and network monitoring program.

Description

A vulnerability in Nagios was discovered due to the improper handling of configuration files which can be owned by a non-root user.

Impact

A local attacker can escalate privileges to root by leveraging access to a non-root owned configuration file.

Workaround

There is no known workaround at this time.

Resolution

All Nagios users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-analyzer/nagios-core-4.3.4"