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authorBenoît Ganne <bganne@cisco.com>2022-01-18 15:56:41 +0100
committerBenoît Ganne <bganne@cisco.com>2023-02-06 17:03:39 +0100
commit752f6fe1b06e96f2c28bf846aadc79d8cdb0bdb1 (patch)
tree6cbfd63112e6e002ddd884cc4cf53a6a546cb1e0 /test/sys_req
parent3e0dafb74636671624a4168ea55c189c9e37929c (diff)
ipsec: fix AES CBC IV generation (CVE-2022-46397)stable/2001
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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