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authorBenoît Ganne <bganne@cisco.com>2022-01-18 15:56:41 +0100
committerDave Wallace <dwallacelf@gmail.com>2023-02-08 01:06:39 +0000
commit02dfd296342525a0802132d85d0ea51da841e5ce (patch)
treea4bdb7dbb25c30e8c6e9a9c379ee5e443de8fbab /src/vnet/ipsec/ipsec_sa.h
parentaaad4f977cd7337b37cc6f00019f601f07abdced (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>
Diffstat (limited to 'src/vnet/ipsec/ipsec_sa.h')
-rw-r--r--src/vnet/ipsec/ipsec_sa.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/vnet/ipsec/ipsec_sa.h b/src/vnet/ipsec/ipsec_sa.h
index df079b13872..88d5c42c31b 100644
--- a/src/vnet/ipsec/ipsec_sa.h
+++ b/src/vnet/ipsec/ipsec_sa.h
@@ -137,7 +137,7 @@ typedef struct
u32 seq;
u32 seq_hi;
u64 replay_window;
- u64 ctr_iv_counter;
+ u64 iv_counter;
dpo_id_t dpo;
vnet_crypto_key_index_t crypto_key_index;