This indicates an attempt to exploit a buffer-overflow vulnerability in IBM Lotus Sametime.
The IBM Lotus Sametime application contains a stack-based buffer-overflow vulnerability that is triggered when processing malformed HTTP requests. Successful exploitation could make it possible for remote attackers to execute arbitrary code or crash a vulnerable system.
Impact
System Compromise Denial of Service
Affected Products
IBM Lotus Sametime 7.5.1 IBM Lotus Sametime 8.0 IBM Lotus Sametime 7.5 IBM Lotus Sametime 7.0