Antoine Delignat-Lavaud from Inria discovered an issue in the way NSS (the Mozilla Network Security Service library, embedded in Wheezy's Icedove), 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.

For the stable distribution (wheezy), this problem has been fixed in version 24.8.1-1~deb7u1. For the testing distribution (jessie) and unstable distribution (sid), Icedove uses the system NSS library, handled in DSA 3033-1. We recommend that you upgrade your icedove packages.

Icedove is an unbranded Thunderbird mail client suitable for free distribution. It supports different mail accounts (POP, IMAP, Gmail), has an integrated learning Spam filter, and offers easy organization of mails with tagging and virtual folders. Also, more features can be added by installing extensions.

icedove on Debian Linux

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

• http://www.debian.org/security/2014/dsa-3037.html

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Updated on 2015-03-25