Title: OpenVMS Finger Service Stack Based Buffer Overflow Vulnerability
Severity: HIGH
Description:
The finger service ('fingerd') is part of the MultiNet suite of TCP/IP applications for OpenVMS. The service is prone to a stack-based buffer-overflow vulnerability because it fails to adequately bounds-check user-supplied input.
The finger service listens on TCP port 79 by default. Attackers can send specially crafted username queries that will be copied into an inadequately sized memory buffer. Usernames in excess of approximately 250 bytes are sufficient to trigger this issue.
Attackers can exploit this issue to execute arbitrary code in the context of the affected application. Failed attempts will likely cause denial-of-service conditions.
We were not told which versions are affected. We will update this BID as more information emerges.
Affected Products:
- HP OpenVMS 8.3 Integrity
- HP OpenVMS 8.3.Alpha
References:
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