Security Vulnerability - GroupWise 8 Internet Agent VCALENDAR Variable Parsing

  • 7007155
  • 04-Nov-2010
  • 26-Apr-2012


Novell GroupWise 8
Novell GroupWise 8 Internet Agent

Affected versions: GroupWise 8.0x, 8.01x, 8.02
Previous versions of GroupWise are likely also vulnerable but are no longer supported. Customers on earlier versions of GroupWise should, at a minimum, upgrade their GWIAs and associated Domains to version 8.02 Hot Patch 1 in order to secure their system.


The GroupWise Internet Agent (GWIA) has multiple vulnerabilities in the way that it parses variables within a received VCALENDAR message, which could potentially allow an unauthenticated remote attacker to execute arbitrary code on vulnerable installations of GWIA.  

NOTE: The Tippingpoint/ZDI advisory specifically references "the gwwww1.dll module" because the person who reported the issue to ZDI tested GWIA on Windows Server.  However, this vulnerability affects GWIA running on all supported server OS platforms (Windows, SuSE Linux, & NetWare), and is NOT specific to Windows.

These vulnerabilities were discovered and reported by Anonymous working with TippingPoint's Zero Day Initiative (, ZDI-CAN-954, ZDI-CAN-955, ZDI-CAN-960, ZDI-CAN-961

Novell bugs 642339, 642345, 642349, 642340


To resolve this security issue, update GWIA to version 8.02 Hot Patch 1 (or later).


Security Alert

Bug Number

642339 642345 642349