OpenBSD ISAKMPD Kernel Heap Buffer Overflow Local Denial Of Service Vulnerability

BID:11928

Info

OpenBSD ISAKMPD Kernel Heap Buffer Overflow Local Denial Of Service Vulnerability

Bugtraq ID: 11928
Class: Boundary Condition Error
CVE:
Remote: No
Local: Yes
Published: Dec 14 2004 12:00AM
Updated: Dec 14 2004 12:00AM
Credit: Stefan Miltchev disclosed this vulnerability to the vendor.
Vulnerable: OpenBSD OpenBSD 3.6
OpenBSD OpenBSD 3.5
OpenBSD OpenBSD 3.4
Not Vulnerable:

Discussion

OpenBSD ISAKMPD Kernel Heap Buffer Overflow Local Denial Of Service Vulnerability

It is reported that OpenBSD's IPSEC implementation is susceptible to a kernel heap buffer overflow local denial of service vulnerability. This issue is reportedly only exploitable by local users when isakmpd(8) is running.

This issue allows attackers with local interactive access on computers running isakmpd(8) to cause kernel crashes, denying service to legitimate users. It is reported that this issue doesn't likely allow privilege escalation or code execution.

It should be noted that isakmpd(8) is not configured to run by default.

Exploit / POC

OpenBSD ISAKMPD Kernel Heap Buffer Overflow Local Denial Of Service Vulnerability

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

OpenBSD ISAKMPD Kernel Heap Buffer Overflow Local Denial Of Service Vulnerability

Solution:
The vendor has made patches available for OpenBSD 3.4, 3.5, and 3.6. The OpenBSD CVS repository has had the fixes available since 10 December, 2004.


OpenBSD OpenBSD 3.5

OpenBSD OpenBSD 3.4

OpenBSD OpenBSD 3.6

References

OpenBSD ISAKMPD Kernel Heap Buffer Overflow Local Denial Of Service Vulnerability

References:

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