diff options
| author |   Benoît Ganne <bganne@cisco.com> | 2022-01-18 15:56:41 +0100 |
|---|---|---|
| committer |   Dave Wallace <dwallacelf@gmail.com> | 2023-02-08 01:06:52 +0000 |
| commit | c6fe2c3053b7534e38fbf04d4442fc3f166a55c0 (patch) | |
| tree | 6fecebc05f0955d9b6fc244e6c4624060fad8983 /src/vcl | |
| parent | 2a3d41cea2b854aec11871719eb6bb967089ad33 (diff) | |
ipsec: fix AES CBC IV generation (CVE-2022-46397)
For AES-CBC, the IV must be unpredictable (see NIST SP800-38a Appendix
C). Chaining IVs like is done by ipsecmb and native backends for the
VNET_CRYPTO_OP_FLAG_INIT_IV is fully predictable.
Encrypt a counter as part of the message, making the (predictable)
counter-generated IV unpredictable.
Fixes: VPP-2037
Type: fix
Change-Id: If4f192d62bf97dda553e7573331c75efa11822ae
Signed-off-by: Benoît Ganne <bganne@cisco.com>
Diffstat (limited to 'src/vcl')
0 files changed, 0 insertions, 0 deletions