Advisory Details

February 1st, 2013

Novell GroupWise gwcls1.dll ActiveX Control Remote Code Execution Vulnerability

ZDI-13-008
ZDI-CAN-1329

CVE ID CVE-2012-0439
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Novell
AFFECTED PRODUCTS Groupwise
TIPPINGPOINT™ IPS CUSTOMER PROTECTION TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12494. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Novell Groupwise. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaws exists within multiple methods exposed by gwcls1.dll. There are 20 methods which accept an XPItem pointer and perform operations on the potentially malicious pointer without validation. Additionally, the SetEngine() method accepts an unvalidated pointer and performs operations and method calls based upon it. An attacker can manipulate these behaviors to execute arbitrary code on the user's system in the context of the browser.

VENDOR RESPONSE Novell has issued an update to correct this vulnerability. More details can be found at:
http://www.novell.com/support/kb/doc.php?id=7011688
DISCLOSURE TIMELINE
  • 2011-08-12 - Vulnerability reported to vendor
  • 2013-02-01 - Coordinated public release of advisory
CREDIT Andrea Micalizzi aka rgod
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