Debian Security Advisory DSA 3034-1 (iceweasel - Security Update) Network Vulnerability

Summary

Antoine Delignat-Lavaud from Inria discovered an issue in the way NSS (the Mozilla Network Security Service library, embedded in Wheezy's Iceweasel package), was parsing ASN.1 data used in signatures, making it vulnerable to a signature forgery attack. An attacker could craft ASN.1 data to forge RSA certificates with a valid certification chain to a trusted CA.

Solution

For the stable distribution (wheezy), this problem has been fixed in version 24.8.1esr-1~deb7u1. For the testing distribution (jessie) and unstable distribution (sid), Iceweasel uses the system NSS library, handled in DSA 3033-1. 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