tiff: Security fix CVE-2016-3623

CVE-2016-3623 libtiff: The rgb2ycbcr tool in LibTIFF 4.0.6 and earlier
allows remote attackers to cause a denial of service (divide-by-zero) by
setting the (1) v or (2) h parameter to 0.

External References:
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-3623
http://bugzilla.maptools.org/show_bug.cgi?id=2569

Patch from:
bd024f0701

(From OE-Core rev: d66824eee47b7513b919ea04bdf41dc48a9d85e9)

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-multimedia/libtiff/files/CVE-2016-3623.patch

@@ -0,0 +1,52 @@
+From bd024f07019f5d9fea236675607a69f74a66bc7b Mon Sep 17 00:00:00 2001
+From: erouault <erouault>
+Date: Mon, 15 Aug 2016 21:26:56 +0000
+Subject: [PATCH] * tools/rgb2ycbcr.c: validate values of -v and -h parameters
+ to avoid potential divide by zero. Fixes CVE-2016-3623 (bugzilla #2569)
+
+CVE: CVE-2016-3623
+Upstream-Status: Backport
+https://github.com/vadz/libtiff/commit/bd024f07019f5d9fea236675607a69f74a66bc7b
+
+Signed-off-by: Yi Zhao <yi.zhao@windirver.com>
+---
+ ChangeLog         | 5 +++++
+ tools/rgb2ycbcr.c | 4 ++++
+ 2 files changed, 9 insertions(+)
+
+diff --git a/ChangeLog b/ChangeLog
+index 5d60608..3e6642a 100644
+--- a/ChangeLog
++++ b/ChangeLog
+@@ -1,5 +1,10 @@
+ 2016-08-15 Even Rouault <even.rouault at spatialys.com>
+ 
++	* tools/rgb2ycbcr.c: validate values of -v and -h parameters to
++	avoid potential divide by zero. Fixes CVE-2016-3623 (bugzilla #2569)
++
++2016-08-15 Even Rouault <even.rouault at spatialys.com>
++
+ 	* tools/tiffcrop.c: Fix out-of-bounds write in loadImage().
+ 	From patch libtiff-CVE-2016-3991.patch from
+ 	libtiff-4.0.3-25.el7_2.src.rpm by Nikola Forro (bugzilla #2543)
+diff --git a/tools/rgb2ycbcr.c b/tools/rgb2ycbcr.c
+index 3829d6b..51f4259 100644
+--- a/tools/rgb2ycbcr.c
++++ b/tools/rgb2ycbcr.c
+@@ -95,9 +95,13 @@ main(int argc, char* argv[])
+ 			break;
+ 		case 'h':
+ 			horizSubSampling = atoi(optarg);
++            if( horizSubSampling != 1 && horizSubSampling != 2 && horizSubSampling != 4 )
++                usage(-1);
+ 			break;
+ 		case 'v':
+ 			vertSubSampling = atoi(optarg);
++            if( vertSubSampling != 1 && vertSubSampling != 2 && vertSubSampling != 4 )
++                usage(-1);
+ 			break;
+ 		case 'r':
+ 			rowsperstrip = atoi(optarg);
+-- 
+2.7.4
+

meta/recipes-multimedia/libtiff/tiff_4.0.6.bb

@@ -13,6 +13,7 @@ SRC_URI = "http://download.osgeo.org/libtiff/tiff-${PV}.tar.gz \
            file://CVE-2016-3945.patch \
            file://CVE-2016-3990.patch \
            file://CVE-2016-3991.patch \
+           file://CVE-2016-3623.patch \
           "
 
 SRC_URI[md5sum] = "d1d2e940dea0b5ad435f21f03d96dd72"