tiff: fix CVE-2019-7663

(From OE-Core rev: d06d6910d1ec9374bb15e02809e64e81198731b6)

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

2 files changed, 79 insertions, 1 deletions

diff --git a/meta/recipes-multimedia/libtiff/tiff/CVE-2019-7663.patch b/meta/recipes-multimedia/libtiff/tiff/CVE-2019-7663.patch
new file mode 100644
index 0000000000..f244fb2f32
--- /dev/null
+++ b/meta/recipes-multimedia/libtiff/tiff/CVE-2019-7663.patch
@@ -0,0 +1,77 @@
+CVE: CVE-2019-7663
+Upstream-Status: Backport
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+From c6fc6c1fa895024c86285c58efd6424cf8078f32 Mon Sep 17 00:00:00 2001
+From: Thomas Bernard <miniupnp@free.fr>
+Date: Mon, 11 Feb 2019 10:05:33 +0100
+Subject: [PATCH 1/2] check that (Tile Width)*(Samples/Pixel) do no overflow
+
+fixes bug 2833
+---
+ tools/tiffcp.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/tools/tiffcp.c b/tools/tiffcp.c
+index 2f406e2d..f0ee2c02 100644
+--- a/tools/tiffcp.c
++++ b/tools/tiffcp.c
+@@ -1408,7 +1408,7 @@ DECLAREreadFunc(readSeparateTilesIntoBuffer)
+        int status = 1;
+        uint32 imagew = TIFFRasterScanlineSize(in);
+        uint32 tilew = TIFFTileRowSize(in);
+-       int iskew  = imagew - tilew*spp;
++       int iskew;
+        tsize_t tilesize = TIFFTileSize(in);
+        tdata_t tilebuf;
+        uint8* bufp = (uint8*) buf;
+@@ -1416,6 +1416,12 @@ DECLAREreadFunc(readSeparateTilesIntoBuffer)
+        uint32 row;
+        uint16 bps = 0, bytes_per_sample;
+ 
++       if (spp > (0x7fffffff / tilew))
++       {
++               TIFFError(TIFFFileName(in), "Error, cannot handle that much samples per tile row (Tile Width * Samples/Pixel)");
++               return 0;
++       }
++       iskew = imagew - tilew*spp;
+        tilebuf = _TIFFmalloc(tilesize);
+        if (tilebuf == 0)
+                return 0;
+-- 
+2.20.1
+
+
+From da6454aa80b9bb3154dfab4e8b21637de47531e0 Mon Sep 17 00:00:00 2001
+From: Thomas Bernard <miniupnp@free.fr>
+Date: Mon, 11 Feb 2019 21:42:03 +0100
+Subject: [PATCH 2/2] tiffcp.c: use INT_MAX
+
+---
+ tools/tiffcp.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/tools/tiffcp.c b/tools/tiffcp.c
+index f0ee2c02..8c81aa4f 100644
+--- a/tools/tiffcp.c
++++ b/tools/tiffcp.c
+@@ -41,6 +41,7 @@
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
++#include <limits.h>
+ 
+ #include <ctype.h>
+ 
+@@ -1416,7 +1417,7 @@ DECLAREreadFunc(readSeparateTilesIntoBuffer)
+        uint32 row;
+        uint16 bps = 0, bytes_per_sample;
+ 
+-       if (spp > (0x7fffffff / tilew))
++       if (spp > (INT_MAX / tilew))
+        {
+                TIFFError(TIFFFileName(in), "Error, cannot handle that much samples per tile row (Tile Width * Samples/Pixel)");
+                return 0;
+-- 
+2.20.1
+
diff --git a/meta/recipes-multimedia/libtiff/tiff_4.0.10.bb b/meta/recipes-multimedia/libtiff/tiff_4.0.10.bb
index 3c055a15dc..999496273c 100644
--- a/meta/recipes-multimedia/libtiff/tiff_4.0.10.bb
+++ b/meta/recipes-multimedia/libtiff/tiff_4.0.10.bb
@@ -5,7 +5,8 @@ LIC_FILES_CHKSUM = "file://COPYRIGHT;md5=34da3db46fab7501992f9615d7e158cf"
 CVE_PRODUCT = "libtiff"
 
 SRC_URI = "http://download.osgeo.org/libtiff/tiff-${PV}.tar.gz \
-           file://CVE-2019-6128.patch"
+           file://CVE-2019-6128.patch \
+           file://CVE-2019-7663.patch"
 SRC_URI[md5sum] = "114192d7ebe537912a2b97408832e7fd"
 SRC_URI[sha256sum] = "2c52d11ccaf767457db0c46795d9c7d1a8d8f76f68b0b800a3dfe45786b996e4"