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Security Vulnerability - GroupWise 8 Internet Agent Weekly RRULE (VCALENDAR) Vulnerability

This document (7009215) is provided subject to the disclaimer at the end of this document.


Novell GroupWise 8
Novell GroupWise 8 Internet Agent
GroupWise 8.0x up to (and including) 8.02HP2


The GroupWise Internet Agent (GWIA) has a vulnerability in the way that it parses a weekly calendar recurrence (RRULE) variable within a received VCALENDAR message.  The vulnerability could could potentially allow an unauthenticated remote attacker to execute arbitrary code on vulnerable installations of GWIA.
This vulnerability was discovered and reported by Anonymous working with Verisign's iDefense Labs (, V-0r6xx5bqyc


To resolve this issue, apply GroupWise 8.0 Hot Patch 3 (HP3) or later.
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 8.02HP3 in order to secure their system.


Security Alert

Bug Number



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  • Document ID:7009215
  • Creation Date:19-AUG-11
  • Modified Date:26-APR-12
    • NovellGroupWise

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