Description
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.
References
- 16244 third-party-advisory
- freebsd-aesxcbcmac-security-bypass(21551) vdb-entry
- 14394 vdb-entry
- 1014586 vdb-entry