Vulnerability Note VU#996177

Multiple memory leak vulnerabilities in isakmpd

Original Release date: 27 Aug 2004 | Last revised: 27 Aug 2004


Multiple memory handling vulnerabilities exist in the isakmpd that could allow a remote attacker to cause a denial of service.


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. Under various circumstances, memory allocated by isakmpd during processing of ISAKMP packets was never subsequently freed. As a result, a remote attacker with the ability to craft ISAKMP packets with particular characteristics could cause the isakmpd service to exhaust available memory and crash.


A remote attacker could cause the isakmpd service to crash. Subsequent IPsec-enabled communications may be disrupted as a result.


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.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
OpenBSDAffected-20 Aug 2004
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A


  • None


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: CAN-2004-0222
  • Date Public: 19 Mar 2004
  • Date First Published: 27 Aug 2004
  • Date Last Updated: 27 Aug 2004
  • Severity Metric: 1.69
  • Document Revision: 8


If you have feedback, comments, or additional information about this vulnerability, please send us email.