GLSA 201309-03: Xlockmore: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	Xlockmore: Denial of Service
Date:	09/02/2013
Bugs:	#255229, #440776, #477328
ID:	201309-03

Synopsis

A buffer overflow in Xlockmore might allow remote attackers to cause a Denial of Service.

Background

Xlockmore is just another screensaver application for X.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
x11-misc/xlockmore	< 5.43	>= 5.43	All supported architectures

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"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201309-03.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.