full-disclosure - [SECURITY] [DSA 2276-1] asterisk security update

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Message-ID: <20110710151703.GA30751@ngolde.de>
Date: Sun, 10 Jul 2011 17:17:03 +0200
From: Luciano Bello <luciano@...ian.org>
To: debian-security-announce@...ts.debian.org
Subject: [SECURITY] [DSA 2276-1] asterisk security update

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Debian Security Advisory DSA-2276-1                   security@...ian.org
http://www.debian.org/security/                             Luciano Bello
July 10, 2011                          http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : asterisk
Vulnerability  : multiple denial of service
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2011-2529 CVE-2011-2535
Debian Bug     : 631445 631446 631448

Paul Belanger reported a vulnerability in Asterisk identified as AST-2011-008 
(CVE-2011-2529) through which an unauthenticated attacker may crash an Asterisk 
server remotely. A package containing a null char causes the SIP header parser 
to alter unrelated memory structures.

Jared Mauch reported a vulnerability in Asterisk identified as AST-2011-009 
through which an unauthenticated attacker may crash an Asterisk server remotely. 
If a user sends a package with a Contact header with a missing left angle 
bracket (<) the server will crash. A possible workaround is to disable chan_sip.

The vulnerability identified as AST-2011-010 (CVE-2011-2535) reported about an 
input validation error in the IAX2 channel driver. An unauthenticated attacker 
may crash an Asterisk server remotely by sending a crafted option control frame.

For the oldstable distribution (lenny), this problem has been fixed in
version 1.4.21.2~dfsg-3+lenny3.

For the stable distribution (squeeze), this problem has been fixed in
version 1.6.2.9-2+squeeze3.

For the testing distribution (wheezy), this problem has been fixed in
version 1:1.8.4.3-1.

For the unstable distribution (sid), this problem has been fixed in
version 1:1.8.4.3-1.

We recommend that you upgrade your asterisk 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@...ts.debian.org

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