tiff: Security fix CVE-2016-3990

CVE-2016-3990 libtiff: Heap-based buffer overflow in the
horizontalDifference8 function in tif_pixarlog.c in LibTIFF 4.0.6 and
earlier allows remote attackers to cause a denial of service (crash) or
execute arbitrary code via a crafted TIFF image to tiffcp.

External References:
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-3990
http://bugzilla.maptools.org/show_bug.cgi?id=2544

Patch from:
https://github.com/vadz/libtiff/commit/6a4dbb07ccf92836bb4adac7be4575672d0ac5f1

(From OE-Core rev: c6492563037bcdf7f9cc50c8639f7b6ace261e62)

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>

2 files changed, 67 insertions, 0 deletions

diff --git a/meta/recipes-multimedia/libtiff/files/CVE-2016-3990.patch b/meta/recipes-multimedia/libtiff/files/CVE-2016-3990.patch
new file mode 100644
index 0000000000..7bf52ee5dc
--- /dev/null
+++ b/meta/recipes-multimedia/libtiff/files/CVE-2016-3990.patch
@@ -0,0 +1,66 @@
+From 6a4dbb07ccf92836bb4adac7be4575672d0ac5f1 Mon Sep 17 00:00:00 2001
+From: erouault <erouault>
+Date: Mon, 15 Aug 2016 20:49:48 +0000
+Subject: [PATCH] * 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
+ libtiff-4.0.3-25.el7_2.src.rpm by Nikola Forro, but with different and
+ simpler check. (bugzilla #2544)
+
+invalid tests that rejected valid files. (bugzilla #2545)
+
+CVE: CVE-2016-3990
+Upstream-Status: Backport
+https://github.com/vadz/libtiff/commit/6a4dbb07ccf92836bb4adac7be4575672d0ac5f1
+
+Signed-off-by: Yi Zhao <yi.zhao@windirver.com>
+---
+ ChangeLog              | 10 +++++++++-
+ libtiff/tif_pixarlog.c |  7 +++++++
+ 2 files changed, 16 insertions(+), 1 deletion(-)
+
+diff --git a/ChangeLog b/ChangeLog
+index 9c0ab29..db4ea18 100644
+--- a/ChangeLog
++++ b/ChangeLog
+@@ -1,10 +1,18 @@
+ 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
++       libtiff-4.0.3-25.el7_2.src.rpm by Nikola Forro, but with different and
++       simpler check. (bugzilla #2544)
++
++2016-08-15 Even Rouault <even.rouault at spatialys.com>
++
+        * tools/tiff2rgba.c: Fix integer overflow in size of allocated
+        buffer, when -b mode is enabled, that could result in out-of-bounds
+        write. Based initially on patch tiff-CVE-2016-3945.patch from
+        libtiff-4.0.3-25.el7_2.src.rpm by Nikola Forro, with correction for
+-       invalid tests that rejected valid files.
++       invalid tests that rejected valid files. (bugzilla #2545)
+ 
+ 2016-07-11 Even Rouault <even.rouault at spatialys.com>
+ 
+diff --git a/libtiff/tif_pixarlog.c b/libtiff/tif_pixarlog.c
+index e78f788..28329d1 100644
+--- a/libtiff/tif_pixarlog.c
++++ b/libtiff/tif_pixarlog.c
+@@ -1141,6 +1141,13 @@ PixarLogEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+        }
+ 
+        llen = sp->stride * td->td_imagewidth;
++    /* Check against the number of elements (of size uint16) of sp->tbuf */
++    if( n > td->td_rowsperstrip * llen )
++    {
++        TIFFErrorExt(tif->tif_clientdata, module,
++                     "Too many input bytes provided");
++        return 0;
++    }
+ 
+        for (i = 0, up = sp->tbuf; i < n; i += llen, up += llen) {
+                switch (sp->user_datafmt)  {
+-- 
+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 b9785288ad..dfb2996897 100644
--- a/meta/recipes-multimedia/libtiff/tiff_4.0.6.bb
+++ b/meta/recipes-multimedia/libtiff/tiff_4.0.6.bb
@@ -11,6 +11,7 @@ SRC_URI = "http://download.osgeo.org/libtiff/tiff-${PV}.tar.gz \
            file://CVE-2016-5321.patch \
            file://CVE-2016-5323.patch \
            file://CVE-2016-3945.patch \
+           file://CVE-2016-3990.patch \
           "
 
 SRC_URI[md5sum] = "d1d2e940dea0b5ad435f21f03d96dd72"