diff options
| author |   Benoît Ganne <bganne@cisco.com> | 2022-01-18 15:56:41 +0100 |
|---|---|---|
| committer | Benoît Ganne <bganne@cisco.com> | 2023-02-07 17:55:49 +0100 |
| commit | 11a2212087758f589859c01caf06db21b4184215 (patch) | |
| tree | 5fca52ddf27b4299779ef8a6ee603154d3475431 /src/vlib/buffer.c | |
| parent | 54f8aff02a46562868f3cd3086d1393e85ae22b1 (diff) | |
ipsec: fix AES CBC IV generation (CVE-2022-46397)stable/2101
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/vlib/buffer.c')
0 files changed, 0 insertions, 0 deletions