Overview
A vulnerability exists in the isakmpd that could allow a remote attacker to cause a denial of service.
Description
The OpenBSD isakmpd establishes security associations for encrypted and authenticated (IPsec) network traffic. It implements the Internet Security Association and Key Management Protocol (ISAKMP) and Internet Key Exchange (IKE) protocol. An integer underflow error exists in isakmpd's handling of certain "Certificate Request Payloads". An ISAKMP packet with a malformed Certificate Request Payload can trigger this error, resulting in failed allocation of a large amount of memory and subsequent crash of the isakmpd service. |
Impact
A remote attacker could cause the isakmpd service to crash. Subsequent IPsec-enabled communications may be disrupted as a result. |
Solution
Apply a patch from the vendor Patches have been released to address this issue. Please see the Systems Affected section of this document for more details. |
Vendor Information
CVSS Metrics
| Group | Score | Vector |
|---|---|---|
| Base | ||
| Temporal | ||
| Environmental |
References
Acknowledgements
This vulnerability was discovered by Rapid7 using their Striker test suite.
This document was written by Chad R Dougherty based on information published in Rapid7 Advisory R7-0018.
Other Information
| CVE IDs: | CVE-2004-0220 |
| Severity Metric: | 1.69 |
| Date Public: | 2004-03-19 |
| Date First Published: | 2004-08-27 |
| Date Last Updated: | 2004-08-27 13:27 UTC |
| Document Revision: | 16 |