[openssl-commits] [openssl] master update

[Rich Salz]

The branch master has been updated
       via  a68d35057ba2676bc9b9a16f4952791eef4b9905 (commit)
      from  8af91fd9d08487e0dffb6ccac5f42633c964f3f0 (commit)


- Log -----------------------------------------------------------------
commit a68d35057ba2676bc9b9a16f4952791eef4b9905
Author: Rich Salz <rsalz at openssl.org>
Date:   Mon Apr 24 11:19:56 2017 -0400

    check length sanity before correcting in EVP_CTRL_AEAD_TLS1_AAD
    
    Reviewed-by: Matt Caswell <matt at openssl.org>
    Reviewed-by: Rich Salz <rsalz at openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/3289)

-----------------------------------------------------------------------

Summary of changes:
 crypto/evp/e_aes_cbc_hmac_sha1.c   | 2 ++
 crypto/evp/e_aes_cbc_hmac_sha256.c | 2 ++
 engines/e_dasync.c                 | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/crypto/evp/e_aes_cbc_hmac_sha1.c b/crypto/evp/e_aes_cbc_hmac_sha1.c
index a3c8951..3721751 100644
--- a/crypto/evp/e_aes_cbc_hmac_sha1.c
+++ b/crypto/evp/e_aes_cbc_hmac_sha1.c
@@ -809,6 +809,8 @@ static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
                 key->payload_length = len;
                 if ((key->aux.tls_ver =
                      p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
+                    if (len < AES_BLOCK_SIZE)
+                        return 0;
                     len -= AES_BLOCK_SIZE;
                     p[arg - 2] = len >> 8;
                     p[arg - 1] = len;
diff --git a/crypto/evp/e_aes_cbc_hmac_sha256.c b/crypto/evp/e_aes_cbc_hmac_sha256.c
index bef603a..daae825 100644
--- a/crypto/evp/e_aes_cbc_hmac_sha256.c
+++ b/crypto/evp/e_aes_cbc_hmac_sha256.c
@@ -788,6 +788,8 @@ static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
                 key->payload_length = len;
                 if ((key->aux.tls_ver =
                      p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
+                    if (len < AES_BLOCK_SIZE)
+                        return 0;
                     len -= AES_BLOCK_SIZE;
                     p[arg - 2] = len >> 8;
                     p[arg - 1] = len;
diff --git a/engines/e_dasync.c b/engines/e_dasync.c
index 89b1277..4e3e936 100644
--- a/engines/e_dasync.c
+++ b/engines/e_dasync.c
@@ -606,6 +606,8 @@ static int dasync_cipher_ctrl_helper(EVP_CIPHER_CTX *ctx, int type, int arg,
 
             if (pipe_ctx->enc) {
                 if ((p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
+                    if (len < AES_BLOCK_SIZE)
+                        return 0;
                     len -= AES_BLOCK_SIZE;
                 }