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CVE-2006-4436 Details

Description

isakmpd in OpenBSD 3.8, 3.9, and possibly earlier versions, creates Security Associations (SA) with a replay window of size 0 when isakmpd acts as a responder during SA negotiation, which allows remote attackers to replay IPSec packets and bypass the replay protection.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
http://secunia.com/advisories/21652	CVE	PatchVendor Advisory
http://secunia.com/advisories/21905	CVE
http://securitytracker.com/id?1016757	CVE	Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/28645	CVE
http://www.debian.org/security/2006/dsa-1175	CVE
http://www.openbsd.org/errata38.html#isakmpd	CVE
http://www.openbsd.org/errata.html#isakmpd	CVE
http://www.osvdb.org/28194	CVE
http://www.securityfocus.com/bid/19712	CVE	Patch
http://secunia.com/advisories/21652	[email protected]	PatchVendor Advisory
http://secunia.com/advisories/21905	[email protected]
http://securitytracker.com/id?1016757	[email protected]	Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/28645	[email protected]
http://www.debian.org/security/2006/dsa-1175	[email protected]
http://www.openbsd.org/errata38.html#isakmpd	[email protected]
http://www.openbsd.org/errata.html#isakmpd	[email protected]
http://www.osvdb.org/28194	[email protected]
http://www.securityfocus.com/bid/19712	[email protected]	Patch

see all 18 references

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-Other	Weakness Not in a Standard CWE Category	[email protected]

Affected Products

Product	Versions
openbsd openbsd	3.8 3.9
CPE cpe:2.3:o:openbsd:openbsd:3.8:::::::* cpe:2.3:o:openbsd:openbsd:3.9:::::::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 16, 2026	CVE Modified	[email protected]
Apr 16, 2026		[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jul 20, 2017	CVE Modified	[email protected]
Aug 30, 2006	Initial Analysis	[email protected]