iDefense Security Advisory 09.26.11 - Remote exploitation of a heap overflow vulnerability in Novell Inc.'s GroupWise could allow an attacker to execute arbitrary code with the privileges of the affected service. This vulnerability is present in the calendar processing code, which resides within the GroupWise Internet Agent (GWIA) process. The vulnerability occurs when parsing a malformed calendar recurrence (RRULE) that recurs on weekdays. A heap based buffer overflow can be triggered due to the lack of checks to ensure that there is enough space in the buffer to hold all of the RRULE entry data. Novell GroupWise 8.0x up to (and including) 8.02HP2 are vulnerable.
74cad0c15a570d196b3c7330c61160de1f4e97c9b98ebe52b30ebecc7523282c