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authorYi Zhao <yi.zhao@windriver.com>2016-10-26 16:26:46 +0800
committerRichard Purdie <richard.purdie@linuxfoundation.org>2017-05-18 13:13:36 +0100
commita0115f89df6c082949796a75551ea43b35c39ccd (patch)
tree05114c9b108a67c21bc2f2bdcba388f264996d43
parent5e87d1d9e2861521b52216625a68649a44748ce3 (diff)
downloadopenembedded-core-a0115f89df6c082949796a75551ea43b35c39ccd.zip
openembedded-core-a0115f89df6c082949796a75551ea43b35c39ccd.tar.gz
openembedded-core-a0115f89df6c082949796a75551ea43b35c39ccd.tar.bz2
tiff: Security fix CVE-2016-3991
CVE-2016-3991 libtiff: Heap-based buffer overflow in the loadImage function in the tiffcrop tool in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (out-of-bounds write) or execute arbitrary code via a crafted TIFF image with zero tiles. External References: https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-3991 http://bugzilla.maptools.org/show_bug.cgi?id=2543 Patch from: https://github.com/vadz/libtiff/commit/e596d4e27c5afb7960dc360fdd3afd90ba0fb8ba (From OE-Core rev: d31267438a654ecb396aefced201f52164171055) (From OE-Core rev: cf58711f12425fc1c29ed1e3bf3919b3452aa2b2) 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> Signed-off-by: Armin Kuster <akuster808@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
-rw-r--r--meta/recipes-multimedia/libtiff/files/CVE-2016-3991.patch147
-rw-r--r--meta/recipes-multimedia/libtiff/tiff_4.0.6.bb1
2 files changed, 148 insertions, 0 deletions
diff --git a/meta/recipes-multimedia/libtiff/files/CVE-2016-3991.patch b/meta/recipes-multimedia/libtiff/files/CVE-2016-3991.patch
new file mode 100644
index 0000000..27dfd37
--- /dev/null
+++ b/meta/recipes-multimedia/libtiff/files/CVE-2016-3991.patch
@@ -0,0 +1,147 @@
+From e596d4e27c5afb7960dc360fdd3afd90ba0fb8ba Mon Sep 17 00:00:00 2001
+From: erouault <erouault>
+Date: Mon, 15 Aug 2016 21:05:40 +0000
+Subject: [PATCH 2/2] * 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)
+
+CVE: CVE-2016-3991
+Upstream-Status: Backport
+https://github.com/vadz/libtiff/commit/e596d4e27c5afb7960dc360fdd3afd90ba0fb8ba
+
+Signed-off-by: Yi Zhao <yi.zhao@windirver.com>
+---
+ ChangeLog | 6 ++++++
+ tools/tiffcrop.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++---
+ 2 files changed, 62 insertions(+), 3 deletions(-)
+
+diff --git a/ChangeLog b/ChangeLog
+index db4ea18..5d60608 100644
+--- a/ChangeLog
++++ b/ChangeLog
+@@ -1,5 +1,11 @@
+ 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)
++
++2016-08-15 Even Rouault <even.rouault at spatialys.com>
++
+ * libtiff/tif_pixarlog.c: Fix write buffer overflow in PixarLogEncode
+ if more input samples are provided than expected by PixarLogSetupEncode.
+ Idea based on libtiff-CVE-2016-3990.patch from
+diff --git a/tools/tiffcrop.c b/tools/tiffcrop.c
+index 27abc0b..ddba7b9 100644
+--- a/tools/tiffcrop.c
++++ b/tools/tiffcrop.c
+@@ -798,6 +798,11 @@ static int readContigTilesIntoBuffer (TIFF* in, uint8* buf,
+ }
+
+ tile_buffsize = tilesize;
++ if (tilesize == 0 || tile_rowsize == 0)
++ {
++ TIFFError("readContigTilesIntoBuffer", "Tile size or tile rowsize is zero");
++ exit(-1);
++ }
+
+ if (tilesize < (tsize_t)(tl * tile_rowsize))
+ {
+@@ -807,7 +812,12 @@ static int readContigTilesIntoBuffer (TIFF* in, uint8* buf,
+ tilesize, tl * tile_rowsize);
+ #endif
+ tile_buffsize = tl * tile_rowsize;
+- }
++ if (tl != (tile_buffsize / tile_rowsize))
++ {
++ TIFFError("readContigTilesIntoBuffer", "Integer overflow when calculating buffer size.");
++ exit(-1);
++ }
++ }
+
+ tilebuf = _TIFFmalloc(tile_buffsize);
+ if (tilebuf == 0)
+@@ -1210,6 +1220,12 @@ static int writeBufferToContigTiles (TIFF* out, uint8* buf, uint32 imagelength,
+ !TIFFGetField(out, TIFFTAG_BITSPERSAMPLE, &bps) )
+ return 1;
+
++ if (tilesize == 0 || tile_rowsize == 0 || tl == 0 || tw == 0)
++ {
++ TIFFError("writeBufferToContigTiles", "Tile size, tile row size, tile width, or tile length is zero");
++ exit(-1);
++ }
++
+ tile_buffsize = tilesize;
+ if (tilesize < (tsize_t)(tl * tile_rowsize))
+ {
+@@ -1219,6 +1235,11 @@ static int writeBufferToContigTiles (TIFF* out, uint8* buf, uint32 imagelength,
+ tilesize, tl * tile_rowsize);
+ #endif
+ tile_buffsize = tl * tile_rowsize;
++ if (tl != tile_buffsize / tile_rowsize)
++ {
++ TIFFError("writeBufferToContigTiles", "Integer overflow when calculating buffer size");
++ exit(-1);
++ }
+ }
+
+ tilebuf = _TIFFmalloc(tile_buffsize);
+@@ -5945,12 +5966,27 @@ loadImage(TIFF* in, struct image_data *image, struct dump_opts *dump, unsigned c
+ TIFFGetField(in, TIFFTAG_TILELENGTH, &tl);
+
+ tile_rowsize = TIFFTileRowSize(in);
++ if (ntiles == 0 || tlsize == 0 || tile_rowsize == 0)
++ {
++ TIFFError("loadImage", "File appears to be tiled, but the number of tiles, tile size, or tile rowsize is zero.");
++ exit(-1);
++ }
+ buffsize = tlsize * ntiles;
++ if (tlsize != (buffsize / ntiles))
++ {
++ TIFFError("loadImage", "Integer overflow when calculating buffer size");
++ exit(-1);
++ }
+
+-
+ if (buffsize < (uint32)(ntiles * tl * tile_rowsize))
+ {
+ buffsize = ntiles * tl * tile_rowsize;
++ if (ntiles != (buffsize / tl / tile_rowsize))
++ {
++ TIFFError("loadImage", "Integer overflow when calculating buffer size");
++ exit(-1);
++ }
++
+ #ifdef DEBUG2
+ TIFFError("loadImage",
+ "Tilesize %u is too small, using ntiles * tilelength * tilerowsize %lu",
+@@ -5969,8 +6005,25 @@ loadImage(TIFF* in, struct image_data *image, struct dump_opts *dump, unsigned c
+ TIFFGetFieldDefaulted(in, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
+ stsize = TIFFStripSize(in);
+ nstrips = TIFFNumberOfStrips(in);
++ if (nstrips == 0 || stsize == 0)
++ {
++ TIFFError("loadImage", "File appears to be striped, but the number of stipes or stripe size is zero.");
++ exit(-1);
++ }
++
+ buffsize = stsize * nstrips;
+-
++ if (stsize != (buffsize / nstrips))
++ {
++ TIFFError("loadImage", "Integer overflow when calculating buffer size");
++ exit(-1);
++ }
++ uint32 buffsize_check;
++ buffsize_check = ((length * width * spp * bps) + 7);
++ if (length != ((buffsize_check - 7) / width / spp / bps))
++ {
++ TIFFError("loadImage", "Integer overflow detected.");
++ exit(-1);
++ }
+ if (buffsize < (uint32) (((length * width * spp * bps) + 7) / 8))
+ {
+ buffsize = ((length * width * spp * bps) + 7) / 8;
+--
+2.7.4
+
diff --git a/meta/recipes-multimedia/libtiff/tiff_4.0.6.bb b/meta/recipes-multimedia/libtiff/tiff_4.0.6.bb
index dfb2996..713cf24 100644
--- a/meta/recipes-multimedia/libtiff/tiff_4.0.6.bb
+++ b/meta/recipes-multimedia/libtiff/tiff_4.0.6.bb
@@ -12,6 +12,7 @@ SRC_URI = "http://download.osgeo.org/libtiff/tiff-${PV}.tar.gz \
file://CVE-2016-5323.patch \
file://CVE-2016-3945.patch \
file://CVE-2016-3990.patch \
+ file://CVE-2016-3991.patch \
"
SRC_URI[md5sum] = "d1d2e940dea0b5ad435f21f03d96dd72"