Debian Security Advisory DSA-2377-1 firstname.lastname@example.org http://www.debian.org/security/ Nico Golde Jan 1st, 2012 http://www.debian.org/security/faq
Package : cyrus-imapd-2.2 Vulnerability : NULL pointer dereference Problem type : remote Debian-specific: no CVE IDs : CVE-2011-3481
It was discovered that cyrus-imapd, a highly scalable mail system designed for use in enterprise environments, is not properly parsing mail headers when a client makes use of the IMAP threading feature. As a result, a NULL pointer is dereferenced which crashes the daemon. An attacker can trigger this by sending a mail containing crafted reference headers and access the mail with a client that uses the server threading feature of IMAP.
For the oldstable distribution (lenny), this problem has been fixed in version 2.2.13-14+lenny6.
For the stable distribution (squeeze), this problem has been fixed in version 2.2.13-19+squeeze3.
For the testing (wheezy) and unstable (sid) distributions, this problem has been fixed in cyrus-imapd-2.4 version 2.4.11-1.
We recommend that you upgrade your cyrus-imapd-2.2 packages.
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: http://www.debian.org/security/
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