OpenBSD ISAKMPD IPsec Replay Vulnerability

BID:19712

CVE-2006-4436 |

Info

OpenBSD ISAKMPD IPsec Replay Vulnerability

Bugtraq ID: 19712
Class: Design Error
CVE: CVE-2006-4436
Remote: Yes
Local: No
Published: Aug 25 2006 12:00AM
Updated: Nov 08 2006 10:11PM
Credit: The vendor disclosed this issue.
Vulnerable: OpenBSD OpenBSD 3.9
OpenBSD OpenBSD 3.8
Debian Linux 3.1 sparc
Debian Linux 3.1 s/390
Debian Linux 3.1 ppc
Debian Linux 3.1 mipsel
Debian Linux 3.1 mips
Debian Linux 3.1 m68k
Debian Linux 3.1 ia-64
Debian Linux 3.1 ia-32
Debian Linux 3.1 hppa
Debian Linux 3.1 arm
Debian Linux 3.1 amd64
Debian Linux 3.1 alpha
Debian Linux 3.1
Not Vulnerable:

Discussion

OpenBSD ISAKMPD IPsec Replay Vulnerability

OpenBSD's IPsec implementation is prone to remote replay attacks. This issue is due to the improper implementation of its replay window.

This issue allows remote attackers to replay IPsec traffic. The exact consequences of successful attacks depend on the nature of the traffic being replayed. This will likely affect only higher-level protocols such as UDP, since they don't provide their own anti-replay features.

Exploit / POC

OpenBSD ISAKMPD IPsec Replay Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected]

Solution / Fix

OpenBSD ISAKMPD IPsec Replay Vulnerability

Solution:
The vendor has released patches to address this issue.

Please see the referenced advisories for more information.


OpenBSD OpenBSD 3.8

OpenBSD OpenBSD 3.9

Debian Linux 3.1

References

OpenBSD ISAKMPD IPsec Replay Vulnerability

References:

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report