Vulnerability Note VU#996177

Multiple memory leak vulnerabilities in isakmpd

Overview

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

I. 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. 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.

II. Impact

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

III. 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.

Systems Affected

Vendor	Status	Date Updated
OpenBSD	Vulnerable	20-Aug-2004

References

Credit

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

Date Public	03/19/2004
Date First Published	08/27/2004 09:28:38 AM
Date Last Updated	08/27/2004
CERT Advisory
CVE Name	CAN-2004-0222
Metric	1.69
Document Revision	8

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