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ESB-2016.0642 - [Win][UNIX/Linux][Debian] libotr: Execute arbitrary code/commands - Remote with user interaction

Date: 10 March 2016

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0642
                          libotr security update
                               10 March 2016

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           libotr
Publisher:         Debian
Operating System:  Debian GNU/Linux 7
                   Debian GNU/Linux 8
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-2851  

Original Bulletin: 
   http://www.debian.org/security/2016/dsa-3512

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running libotr check for an updated version of the software for 
         their operating system.

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- - -------------------------------------------------------------------------
Debian Security Advisory DSA-3512-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
March 09, 2016                        https://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : libotr
CVE ID         : CVE-2016-2851

Markus Vervier of X41 D-Sec GmbH discovered an integer overflow
vulnerability in libotr, an off-the-record (OTR) messaging library, in
the way how the sizes of portions of incoming messages were stored. A
remote attacker can exploit this flaw by sending crafted messages to an
application that is using libotr to perform denial of service attacks
(application crash), or potentially, execute arbitrary code with the
privileges of the user running the application.

For the oldstable distribution (wheezy), this problem has been fixed
in version 3.2.1-1+deb7u2.

For the stable distribution (jessie), this problem has been fixed in
version 4.1.0-2+deb8u1.

We recommend that you upgrade your libotr packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
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