Xlockmore: Denial of service

Background

Xlockmore is just another screensaver application for X.

Description

A Denial of Service flaw was found in the way Xlockmore performed the passing of arguments to the underlying localtime() call, when the ‘dlock’ mode was used.

Impact

A local attacker could possibly cause a Denial of Service condition and potentially obtain unauthorized access to the graphical session, previously locked by another user.

Workaround

There is no known workaround at this time.

Resolution

All Xlockmore users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=x11-misc/xlockmore-5.43"