tiff: security fix CVE-2018-10963

Denial of service described at https://nvd.nist.gov/vuln/detail/CVE-2018-10963.

(From OE-Core rev: d19a9b41d3b2dcba3b102a8289b7787b4b131e96)

Signed-off-by: Joe Slater <joe.slater@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-2018-10963.patch

@@ -0,0 +1,39 @@
+From de144fd228e4be8aa484c3caf3d814b6fa88c6d9 Mon Sep 17 00:00:00 2001
+From: Even Rouault <even.rouault@spatialys.com>
+Date: Sat, 12 May 2018 14:24:15 +0200
+Subject: [PATCH] TIFFWriteDirectorySec: avoid assertion. Fixes
+ http://bugzilla.maptools.org/show_bug.cgi?id=2795.
+ CVE-2018-10963
+
+---
+CVE: CVE-2018-10963
+
+Upstream-Status: Backport [gitlab.com/libtiff/libtiff/commit/de144f...]
+
+Signed-off-by: Joe Slater <joe.slater@windriver.com>
+
+---
+ libtiff/tif_dirwrite.c |    7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/libtiff/tif_dirwrite.c b/libtiff/tif_dirwrite.c
+index 2430de6..c15a28d 100644
+--- a/libtiff/tif_dirwrite.c
++++ b/libtiff/tif_dirwrite.c
+@@ -695,8 +695,11 @@ TIFFWriteDirectorySec(TIFF* tif, int isimage, int imagedone, uint64* pdiroff)
+ 								}
+ 								break;
+ 							default:
+-								assert(0);   /* we should never get here */
+-								break;
++								TIFFErrorExt(tif->tif_clientdata,module,
++								            "Cannot write tag %d (%s)",
++								            TIFFFieldTag(o),
++                                                                            o->field_name ? o->field_name : "unknown");
++								goto bad;
+ 						}
+ 					}
+ 				}
+-- 
+1.7.9.5
+

meta/recipes-multimedia/libtiff/tiff_4.0.9.bb

@@ -9,6 +9,7 @@ SRC_URI = "http://download.osgeo.org/libtiff/tiff-${PV}.tar.gz \
            file://CVE-2017-9935.patch \
            file://CVE-2017-18013.patch \
            file://CVE-2018-5784.patch \
+           file://CVE-2018-10963.patch \
           "
 
 SRC_URI[md5sum] = "54bad211279cc93eb4fca31ba9bfdc79"