curl: Security fix for CVE-2016-8617

Affected versions: curl 7.1 to and including 7.50.3
Not affected versions: curl >= 7.51.0

(From OE-Core rev: 3b73976716ee71a8040221f22c5fbda79512a958)

Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/curl/curl/CVE-2016-8617.patch

@@ -0,0 +1,30 @@
+From 32ae8ba41b5dbf26dabe884ac4aa12597d1d96b9 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Wed, 28 Sep 2016 00:05:12 +0200
+Subject: [PATCH] base64: check for integer overflow on large input
+
+Upstream-Status: Backport
+CVE: CVE-2016-8617
+
+Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
+
+---
+ lib/base64.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+Index: curl-7.50.1/lib/base64.c
+===================================================================
+--- curl-7.50.1.orig/lib/base64.c	2016-07-21 04:01:36.000000000 +0530
++++ curl-7.50.1/lib/base64.c	2017-06-12 17:06:30.865546695 +0530
+@@ -190,6 +190,11 @@
+   if(!insize)
+     insize = strlen(indata);
+ 
++#if SIZEOF_SIZE_T == 4
++  if(insize > UINT_MAX/4)
++    return CURLE_OUT_OF_MEMORY;
++#endif
++
+   base64data = output = malloc(insize * 4 / 3 + 4);
+   if(!output)
+     return CURLE_OUT_OF_MEMORY;

meta/recipes-support/curl/curl_7.50.1.bb

@@ -19,6 +19,7 @@ SRC_URI += " file://configure_ac.patch \
              file://CVE-2016-8620.patch \
              file://CVE-2016-8621.patch \
              file://CVE-2016-8623.patch \
+             file://CVE-2016-8617.patch \
            "
 
 SRC_URI[md5sum] = "015f6a0217ca6f2c5442ca406476920b"