Mandriva Linux Security Advisory 2009-229 – Buffer overflow in the SIEVE script component (sieve/script.c) in cyrus-imapd in Cyrus IMAP Server 2.2.13 and 2.3.14 allows local users to execute arbitrary code and read or modify arbitrary messages via a crafted SIEVE script, related to the incorrect use of the sizeof operator for determining buffer length, combined with an integer signedness error. This update provides a solution to this vulnerability. Packages for 2008.0 are being provided due to extended support for Corporate products.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/83500/MDVSA-2009-229-1.txt
Source: https://packetstormsecurity.com/files/83500/Mandriva-Linux-Security-Advisory-2009-229.html