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(parent: 3e0dafb) | patch
ipsec: fix AES CBC IV generation (CVE-2022-46397) 46/38146/1 stable/2001
authorBenoît Ganne <bganne@cisco.com>
Tue, 18 Jan 2022 14:56:41 +0000 (15:56 +0100)
committerBenoît Ganne <bganne@cisco.com>
Mon, 6 Feb 2023 16:03:39 +0000 (17:03 +0100)
commit752f6fe1b06e96f2c28bf846aadc79d8cdb0bdb1
tree6cbfd63112e6e002ddd884cc4cf53a6a546cb1e0tree | snapshot
parent3e0dafb74636671624a4168ea55c189c9e37929ccommit | 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 <bganne@cisco.com>
src/vnet/ipsec/esp_encrypt.c diff | blob | history
src/vnet/ipsec/ipsec_sa.h diff | blob | history
Vector Packet Processing