CVEvulnerability

CVE-2006-4436

5.0 MEDIUM Published 2006-08-29 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2006-08-29
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N

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.

Affected configurations

• openbsd openbsd 3.8 • openbsd openbsd 3.9

References