Debian Security Advisory DSA 2986-1 (iceweasel - security update)

Summary
Multiple security issues have been found in Iceweasel, Debian's version of the Mozilla Firefox web browser: Multiple memory safety errors and use-after-frees may lead to the execution of arbitrary code or denial of service.
Solution
For the stable distribution (wheezy), these problems have been fixed in version 24.7.0esr-1~deb7u1. For the unstable distribution (sid), these problems have been fixed in version 31.0-1. We recommend that you upgrade your iceweasel packages.
Insight
Iceweasel is Firefox, rebranded. It is a powerful, extensible web browser with support for modern web application technologies.
Affected
iceweasel on Debian Linux
Detection
This check tests the installed software version using the apt package manager.
References