A "programming error" in fast_ipsec in FreeBSD 4.8-RELEASE through 6.1-STABLE and NetBSD 2 through 3 does not properly update the sequence number associated with a Security Association, which allows packets to pass sequence number checks and allows remote attackers to capture IPSec packets and conduct replay attacks.
2006-03-23T11:06:00.000
2025-04-03T01:03:51.193
Deferred
CVSSv2: 7.5 (HIGH)
AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | freebsd | freebsd | 4.8 | Yes |
| Operating System | freebsd | freebsd | 4.8 | Yes |
| Operating System | freebsd | freebsd | 4.8 | Yes |
| Operating System | freebsd | freebsd | 4.8 | Yes |
| Operating System | freebsd | freebsd | 4.9 | Yes |
| Operating System | freebsd | freebsd | 4.9 | Yes |
| Operating System | freebsd | freebsd | 4.9 | Yes |
| Operating System | freebsd | freebsd | 4.10 | Yes |
| Operating System | freebsd | freebsd | 4.10 | Yes |
| Operating System | freebsd | freebsd | 4.10 | Yes |
| Operating System | freebsd | freebsd | 4.10 | Yes |
| Operating System | freebsd | freebsd | 4.11 | Yes |
| Operating System | freebsd | freebsd | 4.11 | Yes |
| Operating System | freebsd | freebsd | 4.11 | Yes |
| Operating System | freebsd | freebsd | 5.0 | Yes |
| Operating System | freebsd | freebsd | 5.0 | Yes |
| Operating System | freebsd | freebsd | 5.0 | Yes |
| Operating System | freebsd | freebsd | 5.0 | Yes |
| Operating System | freebsd | freebsd | 5.1 | Yes |
| Operating System | freebsd | freebsd | 5.1 | Yes |
| Operating System | freebsd | freebsd | 5.1 | Yes |
| Operating System | freebsd | freebsd | 5.1 | Yes |
| Operating System | freebsd | freebsd | 5.1 | Yes |
| Operating System | freebsd | freebsd | 5.2 | Yes |
| Operating System | freebsd | freebsd | 5.2.1 | Yes |
| Operating System | freebsd | freebsd | 5.2.1 | Yes |
| Operating System | freebsd | freebsd | 5.3 | Yes |
| Operating System | freebsd | freebsd | 5.3 | Yes |
| Operating System | freebsd | freebsd | 5.3 | Yes |
| Operating System | freebsd | freebsd | 5.3 | Yes |
| Operating System | freebsd | freebsd | 5.4 | Yes |
| Operating System | freebsd | freebsd | 5.4 | Yes |
| Operating System | freebsd | freebsd | 5.4 | Yes |
| Operating System | freebsd | freebsd | 5.4 | Yes |
| Operating System | freebsd | freebsd | 6.0 | Yes |
| Operating System | freebsd | freebsd | 6.0 | Yes |
| Operating System | netbsd | netbsd | 2.0 | Yes |
| Operating System | netbsd | netbsd | 3.0 | Yes |