The AES-XCBC-MAC algorithm in IPsec in FreeBSD 5.3 and 5.4, when used for authentication without other encryption, uses a constant key instead of the one that was assigned by the system administrator, which can allow remote attackers to spoof packets to establish an IPsec session.
2005-08-05T04:00:00.000
2025-04-03T01:03:51.193
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:P/A:N
10.0
2.9
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Operating System | freebsd | freebsd | 5.3 | Yes |
Operating System | freebsd | freebsd | 5.4 | Yes |