[OE-core] [PATCH 2/4] libtiff: fix CVE-2013-4244

[Hongxu Jia]

From: Baogen Shang <baogen.shang at windriver.com>

cve description:
The LZW decompressor in the gif2tiff tool in libtiff 4.0.3 and earlier
allows context-dependent attackers to cause a denial of service
(out-of-bounds write and crash) or possibly execute arbitrary code via
a crafted GIF image.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-4244
Signed-off-by: Baogen Shang <baogen.shang at windriver.com>
Signed-off-by: Hongxu Jia <hongxu.jia at windriver.com>
---
 .../libtiff/files/libtiff-CVE-2013-4244.patch         | 19 +++++++++++++++++++
 meta/recipes-multimedia/libtiff/tiff_4.0.3.bb         |  3 ++-
 2 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-multimedia/libtiff/files/libtiff-CVE-2013-4244.patch

diff --git a/meta/recipes-multimedia/libtiff/files/libtiff-CVE-2013-4244.patch b/meta/recipes-multimedia/libtiff/files/libtiff-CVE-2013-4244.patch
new file mode 100644
index 0000000..1a66830
--- /dev/null
+++ b/meta/recipes-multimedia/libtiff/files/libtiff-CVE-2013-4244.patch
@@ -0,0 +1,19 @@
+This patch comes from: https://github.com/vadz/libtiff/commit/ce6841d9e41d621ba23cf18b190ee6a23b2cc833
+
+Upstream-Status: Backport
+
+Signed-off-by: Baogen shang <baogen.shang at windriver.com>
+--- a/tools/gif2tiff.c	2013-12-17 16:46:02.160814995 +0800
++++ b/tools/gif2tiff.c	2013-12-17 16:52:25.140814949 +0800
+@@ -406,6 +406,11 @@
+         return 0;
+     }
+     if (oldcode == -1) {
++    if (code >= clear) {
++        fprintf(stderr, "bad input: code=%d is larger than clear=%d\n",code, clear);
++        return 0;
++	}
++
+ 	*(*fill)++ = suffix[code];
+ 	firstchar = oldcode = code;
+ 	return 1;
diff --git a/meta/recipes-multimedia/libtiff/tiff_4.0.3.bb b/meta/recipes-multimedia/libtiff/tiff_4.0.3.bb
index 9cb8edf..fb9e0bf 100644
--- a/meta/recipes-multimedia/libtiff/tiff_4.0.3.bb
+++ b/meta/recipes-multimedia/libtiff/tiff_4.0.3.bb
@@ -7,7 +7,8 @@ SRC_URI = "ftp://ftp.remotesensing.org/pub/libtiff/tiff-${PV}.tar.gz \
            file://libtool2.patch \
            file://libtiff-CVE-2013-1960.patch \
            file://libtiff-CVE-2013-4232.patch \
-           file://libtiff-CVE-2013-4243.patch"
+           file://libtiff-CVE-2013-4243.patch \
+           file://libtiff-CVE-2013-4244.patch"
 
 SRC_URI[md5sum] = "051c1068e6a0627f461948c365290410"
 SRC_URI[sha256sum] = "ea1aebe282319537fb2d4d7805f478dd4e0e05c33d0928baba76a7c963684872"
-- 
1.8.1.2