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Novell GroupWise Calendar integerList Buffer Overflow

Novell GroupWise Calendar integerList Buffer Overflow
Posted Sep 28, 2011
Authored by Sebastien Renaud, VUPEN | Site vupen.com

VUPEN Vulnerability Research Team discovered a critical vulnerability in Novell GroupWise. The vulnerability is caused by a buffer overflow error in the "NgwIRecurParam::integerList()" function within the "gwwww1.dll" component when processing a malformed "RRULE" integer list in a Calendar, which could be exploited by remote unauthenticated attackers to compromise a vulnerable server via a specially crafted email message. Versions 8.0.2 SP2 Hot Patch 2 and below are affected.

tags | advisory, remote, overflow
SHA-256 | d697fda1f2bceeef87278e911dee69649d6ee0b25eb8e452101f1275579c8d3a

Novell GroupWise Calendar integerList Buffer Overflow

Change Mirror Download
VUPEN Security Research - Novell GroupWise Calendar "integerList" Remote
Buffer Overflow Vulnerability

Website : http://www.vupen.com/english/research.php

Twitter : http://twitter.com/vupen


I. BACKGROUND
---------------------

"Novell GroupWise is a messaging and collaborative software platform that
supports email, calendaring, personal information management, instant
messaging, and document management." (Wikipedia)


II. DESCRIPTION
---------------------

VUPEN Vulnerability Research Team discovered a critical vulnerability
in Novell GroupWise.

The vulnerability is caused by a buffer overflow error in the
"NgwIRecurParam::integerList()"
function within the "gwwww1.dll" component when processing a malformed
"RRULE" integer list in a Calendar, which could be exploited by remote
unauthenticated attackers to compromise a vulnerable server via a specially
crafted email message.

CVSS Score: 10 (AV:N/AC:L/Au:N/C:C/I:C/A:C)


III. AFFECTED PRODUCTS
---------------------------

Novell GroupWise v8.0.2 (SP2) Hot Patch 2 (HP2) and prior


IV. Binary Analysis & Exploits/PoCs
---------------------------------------

In-depth binary analysis of the vulnerability and a code execution exploit
are available through the VUPEN Binary Analysis & Exploits portal :

http://www.vupen.com/english/services/ba-index.php


VUPEN Binary Analysis & Exploits Service provides private exploits and
in-depth technical analysis of the most significant public vulnerabilities
based on disassembly, reverse engineering, protocol analysis, and code
audit.

The service allows governments and major corporations to evaluate risks, and
protect infrastructures and assets against new threats. The service also
allows security vendors (IPS, IDS, AntiVirus) to supplement their internal
research efforts and quickly develop both vulnerability-based and
exploit-based signatures to proactively protect their customers from attacks
and emerging threats.


V. VUPEN Threat Protection Program
-----------------------------------

Governments and major corporations which are members of the VUPEN Threat
Protection Program (TPP) have been proactively alerted about the
vulnerability
when it was discovered by VUPEN in advance of its public disclosure, and
have received a detailed attack detection guidance to protect national and
critical infrastructures against potential 0-day attacks exploiting this
vulnerability:

http://www.vupen.com/english/services/tpp-index.php


VI. SOLUTION
----------------

Upgrade to Novell GroupWise v8.0.2 (SP2) Hot Patch 3 (HP3)


VII. CREDIT
--------------

This vulnerability was discovered by Sebastien Renaud of VUPEN Security


VIII. ABOUT VUPEN Security
---------------------------

VUPEN is the world leader in vulnerability research for defensive and
offensive cyber security. VUPEN solutions enable corporations and
governments
to measure and manage risks, eliminate vulnerabilities before they can be
exploited, and protect critical infrastructures and assets against known and
unknown vulnerabilities.

VUPEN has been recently recognized as "Company of the Year in the
Vulnerability
Research Market (2011)" by Frost & Sullivan.

VUPEN solutions include:

* VUPEN Binary Analysis & Exploits Service (BAE) :
http://www.vupen.com/english/services/ba-index.php

* VUPEN Threat Protection Program (TPP) :
http://www.vupen.com/english/services/tpp-index.php


IX. REFERENCES
----------------------

http://download.novell.com/Download?buildid=gBjwGIdt77s~
http://www.vupen.com/english/research.php


X. DISCLOSURE TIMELINE
-----------------------------

2010-11-17 - Vulnerability Discovered by VUPEN and shared with TPP customers
2011-09-27 - Public disclosure

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