SynopsisThe remote Debian host is missing a security-related update.
DescriptionIlja van Sprundel of IOActive discovered several security issues in the X.org X server, which may lead to privilege escalation or denial of service.
SolutionUpgrade the xorg-server packages.
For the stable distribution (wheezy), these problems have been fixed in version 1.12.4-6+deb7u5.
For the upcoming stable distribution (jessie), these problems will be fixed soon.