tiff: patch security issues

Fixes
CVE-2019-7663
CVE-2019-6128

Signed-off-by: Jan Pavlinec <jan.pavlinec@nic.cz>

libs/tiff/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=tiff
 PKG_VERSION:=4.0.10
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://download.osgeo.org/libtiff

libs/tiff/patches/020-CVE-2019-7663.patch

@@ -0,0 +1,37 @@
+From 802d3cbf3043be5dce5317e140ccb1c17a6a2d39 Mon Sep 17 00:00:00 2001
+From: Thomas Bernard <miniupnp@free.fr>
+Date: Tue, 29 Jan 2019 11:21:47 +0100
+Subject: [PATCH] TIFFWriteDirectoryTagTransferfunction() : fix NULL
+ dereferencing
+
+http://bugzilla.maptools.org/show_bug.cgi?id=2833
+
+we must check the pointer is not NULL before memcmp() the memory
+---
+ libtiff/tif_dirwrite.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/libtiff/tif_dirwrite.c b/libtiff/tif_dirwrite.c
+index c15a28db..ef30c869 100644
+--- a/libtiff/tif_dirwrite.c
++++ b/libtiff/tif_dirwrite.c
+@@ -1893,12 +1893,14 @@ TIFFWriteDirectoryTagTransferfunction(TIFF* tif, uint32* ndir, TIFFDirEntry* dir
+ 		n=3;
+ 	if (n==3)
+ 	{
+-		if (!_TIFFmemcmp(tif->tif_dir.td_transferfunction[0],tif->tif_dir.td_transferfunction[2],m*sizeof(uint16)))
++		if (tif->tif_dir.td_transferfunction[2] == NULL ||
++		    !_TIFFmemcmp(tif->tif_dir.td_transferfunction[0],tif->tif_dir.td_transferfunction[2],m*sizeof(uint16)))
+ 			n=2;
+ 	}
+ 	if (n==2)
+ 	{
+-		if (!_TIFFmemcmp(tif->tif_dir.td_transferfunction[0],tif->tif_dir.td_transferfunction[1],m*sizeof(uint16)))
++		if (tif->tif_dir.td_transferfunction[1] == NULL ||
++		    !_TIFFmemcmp(tif->tif_dir.td_transferfunction[0],tif->tif_dir.td_transferfunction[1],m*sizeof(uint16)))
+ 			n=1;
+ 	}
+ 	if (n==0)
+-- 
+2.18.1
+

libs/tiff/patches/021-CVE-2019-6128.patch

@@ -0,0 +1,49 @@
+From 0c74a9f49b8d7a36b17b54a7428b3526d20f88a8 Mon Sep 17 00:00:00 2001
+From: Scott Gayou <github.scott@gmail.com>
+Date: Wed, 23 Jan 2019 15:03:53 -0500
+Subject: [PATCH] Fix for simple memory leak that was assigned CVE-2019-6128.
+
+pal2rgb failed to free memory on a few errors. This was reported
+here: http://bugzilla.maptools.org/show_bug.cgi?id=2836.
+---
+ tools/pal2rgb.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/tools/pal2rgb.c b/tools/pal2rgb.c
+index 01d8502e..9492f1cf 100644
+--- a/tools/pal2rgb.c
++++ b/tools/pal2rgb.c
+@@ -118,12 +118,14 @@ main(int argc, char* argv[])
+ 	    shortv != PHOTOMETRIC_PALETTE) {
+ 		fprintf(stderr, "%s: Expecting a palette image.\n",
+ 		    argv[optind]);
++		(void) TIFFClose(in);
+ 		return (-1);
+ 	}
+ 	if (!TIFFGetField(in, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
+ 		fprintf(stderr,
+ 		    "%s: No colormap (not a valid palette image).\n",
+ 		    argv[optind]);
++		(void) TIFFClose(in);
+ 		return (-1);
+ 	}
+ 	bitspersample = 0;
+@@ -131,11 +133,14 @@ main(int argc, char* argv[])
+ 	if (bitspersample != 8) {
+ 		fprintf(stderr, "%s: Sorry, can only handle 8-bit images.\n",
+ 		    argv[optind]);
++		(void) TIFFClose(in);
+ 		return (-1);
+ 	}
+ 	out = TIFFOpen(argv[optind+1], "w");
+-	if (out == NULL)
++	if (out == NULL) {
++		(void) TIFFClose(in);
+ 		return (-2);
++	}
+ 	cpTags(in, out);
+ 	TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &imagewidth);
+ 	TIFFGetField(in, TIFFTAG_IMAGELENGTH, &imagelength);
+-- 
+2.18.1
+