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(parent: d03b3bf) | patch
ipsec: fix AES CBC IV generation (CVE-2022-46397) 53/38153/1
authorBenoît Ganne <[email protected]>
Tue, 18 Jan 2022 14:56:41 +0000 (15:56 +0100)
committerDave Wallace <[email protected]>
Sat, 4 Feb 2023 02:04:24 +0000 (21:04 -0500)
commit9b8dc82531d9cbe5859488a886405a69b163f8a7
tree62456aa3304aa68d4323bc665628cbee9fa4475dtree | snapshot
parentd03b3bf62fdcf855d493653fc410c6bf839d6393commit | diff
ipsec: fix AES CBC IV generation (CVE-2022-46397)

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 <[email protected]>
src/vnet/crypto/crypto.h diff | blob | history
src/vnet/ipsec/esp_encrypt.c diff | blob | history
src/vnet/ipsec/ipsec_sa.h diff | blob | history
Vector Packet Processing