A vulnerability has been found and corrected in cyrus-imapd:
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 (CVE-2009-2632).
This update provides a solution to this vulnerability...