Novell Groupwise iCal COMMENT, RRULE, TZNAME Remote Code Execution Vulnerabilities

October 13th, 2011
ZDI-11-285 ZDI-CAN-1187

CVE ID

CVE-2010-4325

CVSS Score

10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected Vendors

Novell

Affected Products

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.

Multiple flaws exist within the gwwww1.dll module responsible for parsing VCALENDAR data within e-mail messages. When encountering a RRULE, COMMENT, or TZNAME parameter a static sized memory buffer is allocated. Insufficient checks are performed to ensure the size of the parameter's value can be contained in this buffer. An attacker can overflow the buffer and execute arbitrary code under the context of the SYSTEM user.

Additional Details

Novell has issued an update to correct this vulnerability. More details can be found at:
http://www.novell.com/support/search.do?usemicrosite=true&searchString=7009212

Disclosure Timeline

  • 2011-04-01 - Vulnerability reported to vendor
  • 2011-10-13 - Coordinated public release of advisory

Credit

Anonymous

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