gnu: libtiff: Fix CVE-2016-{3623,3945,3990,3991,5321,5323}.

* gnu/packages/image.scm (libtiff)[replacement]: New field.
(libtiff/fixed): New variable.
* gnu/packages/patches/libtiff-CVE-2016-3623.patch,
gnu/packages/patches/libtiff-CVE-2016-3945.patch,
gnu/packages/patches/libtiff-CVE-2016-3990.patch,
gnu/packages/patches/libtiff-CVE-2016-3991.patch,
gnu/packages/patches/libtiff-CVE-2016-5321.patch,
gnu/packages/patches/libtiff-CVE-2016-5323.patch: New files.
* gnu/local.mk (dist_patch_DATA): Add them.

1 files changed, 123 insertions, 0 deletions

diff --git a/gnu/packages/patches/libtiff-CVE-2016-3991.patch b/gnu/packages/patches/libtiff-CVE-2016-3991.patch
new file mode 100644
index 0000000000..cb05f0007f
--- /dev/null
+++ b/gnu/packages/patches/libtiff-CVE-2016-3991.patch
@@ -0,0 +1,123 @@
+Fix CVE-2016-3991 (out-of-bounds write in loadImage()).
+
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3991
+http://bugzilla.maptools.org/show_bug.cgi?id=2543
+
+Patch extracted from upstream CVS repo with:
+$ cvs diff -u -r1.37 -r1.38 tools/tiffcrop.c
+
+Index: tools/tiffcrop.c
+===================================================================
+RCS file: /cvs/maptools/cvsroot/libtiff/tools/tiffcrop.c,v
+retrieving revision 1.37
+retrieving revision 1.38
+diff -u -r1.37 -r1.38
+--- libtiff/tools/tiffcrop.c	11 Jul 2016 21:38:31 -0000	1.37
++++ libtiff/tools/tiffcrop.c	15 Aug 2016 21:05:40 -0000	1.38
+@@ -798,6 +798,11 @@
+     }
+ 
+   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 @@
+               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 @@
+       !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 @@
+               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 @@
+     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 @@
+     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;