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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;
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