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| author |   Benoît Ganne <bganne@cisco.com> | 2022-01-18 15:56:41 +0100 |
|---|---|---|
| committer | Benoît Ganne <bganne@cisco.com> | 2023-02-07 14:34:27 +0100 |
| commit | 3c1021a679193475cbee59a717a53ece009e273f (patch) | |
| tree | 880c7ea4d46f3237998f62730d4814981c74754f /test/test_vm_tap.py | |
| parent | f53edbc3b4e35b368361e0c61b1adf0d5ab70bf7 (diff) | |
ipsec: fix AES CBC IV generation (CVE-2022-46397)stable/2005
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 'test/test_vm_tap.py')
0 files changed, 0 insertions, 0 deletions