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authorBenoît Ganne <bganne@cisco.com>2022-01-18 15:56:41 +0100
committerDave Wallace <dwallacelf@gmail.com>2023-02-03 21:05:21 -0500
commit08ff7a9857212f091a07228f666a2376e26a5eff (patch)
treef505c6a8a84de32d78b3ab25348a4b9e9a89b37e /docs
parent0a485f517d2b6d1c328eda23b707cb8d9c544beb (diff)
ipsec: fix AES CBC IV generation (CVE-2022-46397)stable/2110
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>
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