Novell GroupWise: Remote Code Execution Vulnerability

Users of Novell GroupWise please be advised of a Remote Code Execution vulnerability that has been identified.
To view this vulnerability, possible remedies, and others please check out the Security Advisories at Critical Watch (http://criticalwatch.com/support/security-advisories.aspx)

ZDI-10-243: [ZDI-10-243] Novell GroupWise Internet Agent TZNAME Parsing Remote Code Execution Vulnerability

— Affected Products:
Novell Groupwise
— Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Novell GroupWise. Authentication is not
required to exploit this vulnerability.

The specific flaw exists within the gwwww1.dll module responsible for
parsing VCALENDAR data within e-mail messages. When the code encounters
a TZNAME variable it allocates up to 0xFFFF bytes for the variable’s
value. It then proceeds to copy the value into the fixed-length buffer
without checking if it will fit. By specifying a large enough string in
the e-mail, an attacker can overflow the buffer and execute arbitrary
code under the context of the SYSTEM user.
Read more at http://www.criticalwatch.com

 

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