curl: CVE-2016-8617

OOB write via unchecked multiplication

Affected versions: curl 7.1 to and including 7.50.3

Reference:
https://curl.haxx.se/docs/adv_20161102C.html

Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/meta/recipes-support/curl/curl/CVE-2016-8617.patch b/meta/recipes-support/curl/curl/CVE-2016-8617.patch
new file mode 100644
index 0000000000..d16c2f5a63
--- /dev/null
+++ b/meta/recipes-support/curl/curl/CVE-2016-8617.patch
@@ -0,0 +1,28 @@
+From efd24d57426bd77c9b5860e6b297904703750412 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
+
+CVE: CVE-2016-8617
+Upstream-Status: Backport
+
+Bug: https://curl.haxx.se/docs/adv_20161102C.html
+Reported-by: Cure53
+
+Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
+---
+diff -ruN a/lib/base64.c b/lib/base64.c
+--- a/lib/base64.c      2016-02-03 00:02:43.000000000 +0100
++++ b/lib/base64.c      2016-11-07 09:22:07.918167530 +0100
+@@ -190,6 +190,11 @@
+   if(0 == 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(NULL == output)
+     return CURLE_OUT_OF_MEMORY;