From 62cf8fa7cd2126cce5f1ac37feeb3ca75db6f6bf Mon Sep 17 00:00:00 2001
From: Leo Famulari <leo@famulari.name>
Date: Mon, 23 Jan 2017 02:06:40 -0500
Subject: gnu: libtiff: Fix CVE-2017-5225.

* gnu/packages/patches/libtiff-CVE-2017-5225.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/image.scm (libtiff/fixed)[source]: Use it.
---
 gnu/packages/patches/libtiff-CVE-2017-5225.patch | 86 ++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 gnu/packages/patches/libtiff-CVE-2017-5225.patch

(limited to 'gnu/packages/patches')

diff --git a/gnu/packages/patches/libtiff-CVE-2017-5225.patch b/gnu/packages/patches/libtiff-CVE-2017-5225.patch
new file mode 100644
index 0000000000..3158b49360
--- /dev/null
+++ b/gnu/packages/patches/libtiff-CVE-2017-5225.patch
@@ -0,0 +1,86 @@
+Fix CVE-2017-5225 (Heap based buffer overflow in tools/tiffcp):
+
+http://bugzilla.maptools.org/show_bug.cgi?id=2656
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5225
+https://security-tracker.debian.org/tracker/CVE-2017-5225
+
+2017-01-11 Even Rouault <even.rouault at spatialys.com>
+
+        * tools/tiffcp.c: error out cleanly in cpContig2SeparateByRow and
+        cpSeparate2ContigByRow if BitsPerSample != 8 to avoid heap based
+overflow.
+        Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2656 and
+        http://bugzilla.maptools.org/show_bug.cgi?id=2657
+
+
+less C/cvs/maptools/cvsroot/libtiff/ChangeLog,v  <--  ChangeLog
+new revision: 1.1210; previous revision: 1.1209
+/cvs/maptools/cvsroot/libtiff/tools/tiffcp.c,v  <--  tools/tiffcp.c
+new revision: 1.61; previous revision: 1.60
+
+Index: libtiff/tools/tiffcp.c
+===================================================================
+RCS file: /cvs/maptools/cvsroot/libtiff/tools/tiffcp.c,v
+retrieving revision 1.60
+retrieving revision 1.61
+diff -u -r1.60 -r1.61
+--- libtiff/tools/tiffcp.c	3 Dec 2016 16:50:02 -0000	1.60
++++ libtiff/tools/tiffcp.c	11 Jan 2017 19:26:14 -0000	1.61
+#@@ -1,4 +1,4 @@
+#-/* $Id: tiffcp.c,v 1.60 2016-12-03 16:50:02 erouault Exp $ */
+#+/* $Id: tiffcp.c,v 1.61 2017-01-11 19:26:14 erouault Exp $ */
+# 
+# /*
+#  * Copyright (c) 1988-1997 Sam Leffler
+@@ -591,7 +591,7 @@
+ static int
+ tiffcp(TIFF* in, TIFF* out)
+ {
+-	uint16 bitspersample, samplesperpixel = 1;
++	uint16 bitspersample = 1, samplesperpixel = 1;
+ 	uint16 input_compression, input_photometric = PHOTOMETRIC_MINISBLACK;
+ 	copyFunc cf;
+ 	uint32 width, length;
+@@ -1067,6 +1067,16 @@
+ 	register uint32 n;
+ 	uint32 row;
+ 	tsample_t s;
++        uint16 bps = 0;
++
++        (void) TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bps);
++        if( bps != 8 )
++        {
++            TIFFError(TIFFFileName(in),
++                      "Error, can only handle BitsPerSample=8 in %s",
++                      "cpContig2SeparateByRow");
++            return 0;
++        }
+ 
+ 	inbuf = _TIFFmalloc(scanlinesizein);
+ 	outbuf = _TIFFmalloc(scanlinesizeout);
+@@ -1120,6 +1130,16 @@
+ 	register uint32 n;
+ 	uint32 row;
+ 	tsample_t s;
++        uint16 bps = 0;
++
++        (void) TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bps);
++        if( bps != 8 )
++        {
++            TIFFError(TIFFFileName(in),
++                      "Error, can only handle BitsPerSample=8 in %s",
++                      "cpSeparate2ContigByRow");
++            return 0;
++        }
+ 
+ 	inbuf = _TIFFmalloc(scanlinesizein);
+ 	outbuf = _TIFFmalloc(scanlinesizeout);
+@@ -1784,7 +1804,7 @@
+ 	uint32 w, l, tw, tl;
+ 	int bychunk;
+ 
+-	(void) TIFFGetField(in, TIFFTAG_PLANARCONFIG, &shortv);
++	(void) TIFFGetFieldDefaulted(in, TIFFTAG_PLANARCONFIG, &shortv);
+ 	if (shortv != config && bitspersample != 8 && samplesperpixel > 1) {
+ 		fprintf(stderr,
+ 		    "%s: Cannot handle different planar configuration w/ bits/sample != 8\n",
-- 
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