ISAKMPD "Invalid SPI" SA Deletion Vulnerability

BID:9333

Info

ISAKMPD "Invalid SPI" SA Deletion Vulnerability

Bugtraq ID: 9333
Class: Access Validation Error
CVE:
Remote: Yes
Local: No
Published: Jan 01 2004 12:00AM
Updated: Jan 01 2004 12:00AM
Credit: Discovered by Thomas Walpuski <[email protected]>.
Vulnerable: OpenBSD OpenBSD 3.4
OpenBSD OpenBSD 3.3
OpenBSD OpenBSD 3.2
OpenBSD OpenBSD 3.1
OpenBSD OpenBSD 3.0
Not Vulnerable:

Discussion

ISAKMPD "Invalid SPI" SA Deletion Vulnerability

When isakmpd receives an INVALID-SPI notification, it will delete the SA associated with the specified SPI. All associated SAs will be deleted as well. This occurs only when the notification originates from the correct IP address.

Exploitation of this vulnerability may result in a disruption of service.
There may be more serious ramifications, as the IPSec policies are also reportedly deleted in most cases.

Exploit / POC

ISAKMPD "Invalid SPI" SA Deletion Vulnerability

Though no exploit code is available, a detailed description of an attack that exploits this vulnerability is included in the message by "Thomas Walpuski <[email protected]>". See the reference section.

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

Solution / Fix

ISAKMPD "Invalid SPI" SA Deletion Vulnerability

Solution:
The vendor has released a patch to address this issue.


OpenBSD OpenBSD 3.0

OpenBSD OpenBSD 3.2

OpenBSD OpenBSD 3.4

OpenBSD OpenBSD 3.1

OpenBSD OpenBSD 3.3

References

ISAKMPD "Invalid SPI" SA Deletion 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