1 files changed, 46 insertions, 0 deletions

diff --git a/meta/recipes-connectivity/openssl/openssl/0001-CVE-2017-3731.patch b/meta/recipes-connectivity/openssl/openssl/0001-CVE-2017-3731.patch
new file mode 100644
index 0000000000..04ef526826
--- /dev/null
+++ b/meta/recipes-connectivity/openssl/openssl/0001-CVE-2017-3731.patch
@@ -0,0 +1,46 @@
+From 0cde9a9645c949fd0acf657dadc747676245cfaf Mon Sep 17 00:00:00 2001
+From: Alexandru Moise <alexandru.moise@windriver.com>
+Date: Tue, 7 Feb 2017 11:13:19 +0200
+Subject: [PATCH 1/2] crypto/evp: harden RC4_MD5 cipher.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Originally a crash in 32-bit build was reported CHACHA20-POLY1305
+cipher. The crash is triggered by truncated packet and is result
+of excessive hashing to the edge of accessible memory (or bogus
+MAC value is produced if x86 MD5 assembly module is involved). Since
+hash operation is read-only it is not considered to be exploitable
+beyond a DoS condition.
+
+Thanks to Robert Święcki for report.
+
+CVE-2017-3731
+
+Backported from upstream commit:
+8e20499629b6bcf868d0072c7011e590b5c2294d
+
+Upstream-Status: Backport
+
+Reviewed-by: Rich Salz <rsalz@openssl.org>
+Signed-off-by: Alexandru Moise <alexandru.moise@windriver.com>
+---
+ crypto/evp/e_rc4_hmac_md5.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/crypto/evp/e_rc4_hmac_md5.c b/crypto/evp/e_rc4_hmac_md5.c
+index 5e92855..3293419 100644
+--- a/crypto/evp/e_rc4_hmac_md5.c
++++ b/crypto/evp/e_rc4_hmac_md5.c
+@@ -269,6 +269,8 @@ static int rc4_hmac_md5_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
+             len = p[arg - 2] << 8 | p[arg - 1];
+ 
+             if (!ctx->encrypt) {
++               if (len < MD5_DIGEST_LENGTH)
++                    return -1;
+                 len -= MD5_DIGEST_LENGTH;
+                 p[arg - 2] = len >> 8;
+                 p[arg - 1] = len;
+-- 
+2.10.2
+