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authorBenoît Ganne <bganne@cisco.com>2022-01-18 15:56:41 +0100
committerBenoît Ganne <bganne@cisco.com>2023-02-07 17:55:49 +0100
commit11a2212087758f589859c01caf06db21b4184215 (patch)
tree5fca52ddf27b4299779ef8a6ee603154d3475431 /src/vnet/feature/feature.h
parent54f8aff02a46562868f3cd3086d1393e85ae22b1 (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>
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