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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openbsd | Openbsd | 3.8 (including) | 3.8 (including) |
| Openbsd | Openbsd | 3.9 (including) | 3.9 (including) |