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Debian Security Advisory 2377-1

Debian Security Advisory 2377-1
Posted Jan 2, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2377-1 - 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.

tags | advisory, imap
systems | linux, debian
advisories | CVE-2011-3481
SHA-256 | 14e886dd64794f4903819907a35afc505014e384c7107e2722545359da6f7a97

Debian Security Advisory 2377-1

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- ---------------------------------------------------------------------------
Debian Security Advisory DSA-2377-1 security@debian.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/

Mailing list: debian-security-announce@lists.debian.org

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