diff options
Diffstat (limited to 'gnu/packages/patches/libtiff-CVE-2016-3991.patch')
-rw-r--r-- | gnu/packages/patches/libtiff-CVE-2016-3991.patch | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/gnu/packages/patches/libtiff-CVE-2016-3991.patch b/gnu/packages/patches/libtiff-CVE-2016-3991.patch deleted file mode 100644 index cb05f0007f..0000000000 --- a/gnu/packages/patches/libtiff-CVE-2016-3991.patch +++ /dev/null @@ -1,123 +0,0 @@ -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; |