Debian: DSA 1305-1 Moderate: Icedove Remote Authentication Threat

Gatan Leurent discovered a cryptographical weakness in APOP
authentication, which reduces the required efforts for an MITM attack
to intercept a password. The update enforces stricter validation, which
prevents this attack.

CVE-2007-2867

Boris Zbarsky, Eli Friedman, Georgi Guninski, Jesse Ruderman, Martijn
Wargers and Olli Pettay discovered crashes in the layout engine, which
might allow the execution of arbitrary code.

CVE-2007-2868

Brendan Eich, Igor Bukanov, Jesse Ruderman, moz_bug_r_a4 and Wladimir Palant
discovered crashes in the Javascript engine, which might allow the execution of
arbitrary code. Generally, enabling Javascript in Icedove is not recommended.

Fixes for the oldstable distribution (sarge) are not available. While there
will be another round of security updates for Mozilla products, Debian doesn't
have the ressources to backport further security fixes to the old Mozilla
products. You're strongly encouraged to upgrade ...