Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input sanitising may lead to privilege escalation or denial of service.

For the oldstable distribution (squeeze), this problem has been fixed in version 1:1.1.0-2+squeeze1. For the stable distribution (wheezy), this problem has been fixed in version 1:1.1.2-1+deb7u1. For the unstable distribution (sid), this problem has been fixed in version 1:1.1.2-1+deb7u1. We recommend that you upgrade your libdmx packages.

libdmx is an interface to the DMX extension for X, which allows a single server to be set up as a proxy spanning multiple servers.

libdmx on Debian Linux

This check tests the installed software version using the apt package manager.

• http://www.debian.org/security/2013/dsa-2673.html

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Updated on 2015-03-25