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Diffstat (limited to 'crypto/evp/e_aes_cbc_hmac_sha1.c')
-rw-r--r--crypto/evp/e_aes_cbc_hmac_sha1.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/crypto/evp/e_aes_cbc_hmac_sha1.c b/crypto/evp/e_aes_cbc_hmac_sha1.c
index 3f8a5ae39129..d1f5928f628a 100644
--- a/crypto/evp/e_aes_cbc_hmac_sha1.c
+++ b/crypto/evp/e_aes_cbc_hmac_sha1.c
@@ -503,7 +503,12 @@ static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
case EVP_CTRL_AEAD_TLS1_AAD:
{
unsigned char *p = ptr;
- unsigned int len = p[arg - 2] << 8 | p[arg - 1];
+ unsigned int len;
+
+ if (arg != EVP_AEAD_TLS1_AAD_LEN)
+ return -1;
+
+ len = p[arg - 2] << 8 | p[arg - 1];
if (ctx->encrypt) {
key->payload_length = len;
@@ -520,8 +525,6 @@ static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
- len);
} else {
- if (arg > 13)
- arg = 13;
memcpy(key->aux.tls_aad, ptr, arg);
key->payload_length = arg;