openssl: Security fix CVE-2016-6303

affects openssl < 1.0.2i

Reference:
https://www.openssl.org/news/secadv/20160922.txt

Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
Signed-off-by: Adrian Dudau <adrian.dudau@enea.com>

2 files changed, 37 insertions, 0 deletions

diff --git a/recipes-connectivity/openssl/openssl/CVE-2016-6303.patch b/recipes-connectivity/openssl/openssl/CVE-2016-6303.patch
new file mode 100644
index 0000000..95bdec4
--- /dev/null
+++ b/recipes-connectivity/openssl/openssl/CVE-2016-6303.patch
@@ -0,0 +1,36 @@
+From 1027ad4f34c30b8585592764b9a670ba36888269 Mon Sep 17 00:00:00 2001
+From: "Dr. Stephen Henson" <steve@openssl.org>
+Date: Fri, 19 Aug 2016 23:28:29 +0100
+Subject: [PATCH] Avoid overflow in MDC2_Update()
+
+Thanks to Shi Lei for reporting this issue.
+
+CVE-2016-6303
+
+Reviewed-by: Matt Caswell <matt@openssl.org>
+(cherry picked from commit 55d83bf7c10c7b205fffa23fa7c3977491e56c07)
+
+Upstream-Status: Backport
+CVE: CVE-2016-6303
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+---
+ crypto/mdc2/mdc2dgst.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/crypto/mdc2/mdc2dgst.c b/crypto/mdc2/mdc2dgst.c
+index 6615cf8..2dce493 100644
+--- a/crypto/mdc2/mdc2dgst.c
++++ b/crypto/mdc2/mdc2dgst.c
+@@ -91,7 +91,7 @@ int MDC2_Update(MDC2_CTX *c, const unsigned char *in, size_t len)
+ 
+     i = c->num;
+     if (i != 0) {
+-        if (i + len < MDC2_BLOCK) {
++        if (len < MDC2_BLOCK - i) {
+             /* partial block */
+             memcpy(&(c->data[i]), in, len);
+             c->num += (int)len;
+-- 
+2.7.4
+
diff --git a/recipes-connectivity/openssl/openssl_1.0.2h.bbappend b/recipes-connectivity/openssl/openssl_1.0.2h.bbappend
index e07690f..528a77c 100644
--- a/recipes-connectivity/openssl/openssl_1.0.2h.bbappend
+++ b/recipes-connectivity/openssl/openssl_1.0.2h.bbappend
@@ -8,4 +8,5 @@ SRC_URI += "file://CVE-2016-2178.patch \
            file://CVE-2016-2181_p3.patch \
            file://CVE-2016-2182.patch \
            file://CVE-2016-6302.patch \
+           file://CVE-2016-6303.patch \
            "