diff options
| author |   Benoît Ganne <bganne@cisco.com> | 2022-01-18 15:56:41 +0100 |
|---|---|---|
| committer | Benoît Ganne <bganne@cisco.com> | 2023-02-06 16:27:55 +0100 |
| commit | 70fc5aff89103acaa5768522e45497134b48a982 (patch) | |
| tree | 217b84b8f04dd34b0e993c262789389356a98e00 /src/vnet/ipsec-gre | |
| parent | e88582facad678701457fa68cbe4ed24f6ec4266 (diff) | |
ipsec: fix AES CBC IV generation (CVE-2022-46397)stable/1904
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/vnet/ipsec-gre')
0 files changed, 0 insertions, 0 deletions