292 lines
13 KiB
HTML
292 lines
13 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML>
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<HEAD>
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<TITLE>
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Changes in TIFF v4.0.4beta
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</TITLE>
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</HEAD>
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<BODY BGCOLOR=white>
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<FONT FACE="Helvetica, Arial, Sans">
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<BASEFONT SIZE=4>
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<B><FONT SIZE=+3>T</FONT>IFF <FONT SIZE=+2>C</FONT>HANGE <FONT SIZE=+2>I</FONT>NFORMATION</B>
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<BASEFONT SIZE=3>
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<UL>
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<HR SIZE=4 WIDTH=65% ALIGN=left>
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<B>Current Version</B>: v4.0.4beta<BR>
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<B>Previous Version</B>: <A HREF=v4.0.3.html>v4.0.3</a><BR>
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<B>Master Download Site</B>: <A HREF="https://download.osgeo.org/libtiff">
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download.osgeo.org</a>, directory pub/libtiff</A><BR>
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<B>Master HTTP Site</B>: <A HREF="http://www.simplesystems.org/libtiff/">
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http://www.simplesystems.org/libtiff/</a>
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<HR SIZE=4 WIDTH=65% ALIGN=left>
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</UL>
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<P>
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This document describes the changes made to the software between the
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<I>previous</I> and <I>current</I> versions (see above). If you don't
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find something listed here, then it was not done in this timeframe, or
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it was not considered important enough to be mentioned. The following
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information is located here:
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<UL>
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<LI><A HREF="#highlights">Major Changes</A>
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<LI><A HREF="#configure">Changes in the software configuration</A>
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<LI><A HREF="#libtiff">Changes in libtiff</A>
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<LI><A HREF="#tools">Changes in the tools</A>
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<LI><A HREF="#contrib">Changes in the contrib area</A>
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</UL>
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<p>
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<P><HR WIDTH=65% ALIGN=left>
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<!--------------------------------------------------------------------------->
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<A NAME="highlights"><B><FONT SIZE=+3>M</FONT>AJOR CHANGES:</B></A>
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<UL>
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<li> None
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</UL>
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<P><HR WIDTH=65% ALIGN=left>
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<!--------------------------------------------------------------------------->
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<A NAME="configure"><B><FONT SIZE=+3>C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:</B></A>
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<UL>
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<li> Updated to use Automake 1.15 and Libtool 2.4.5
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</UL>
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<P><HR WIDTH=65% ALIGN=left>
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<!--------------------------------------------------------------------------->
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<A NAME="libtiff"><B><FONT SIZE=+3>C</FONT>HANGES IN LIBTIFF:</B></A>
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<UL>
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<li> TIFFCheckDirOffset(): avoid uint16 overflow
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when reading more than 65535 directories, and effectively error out when
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eaching that limit.
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<li> TIFFNumberOfDirectories(): generate error in case of directory count
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overflow.
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<li> TIFFAdvanceDirectory(): If nextdir is found to
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be defective, then set it to zero before returning error in order
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to terminate processing of truncated TIFF.
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<li> JPEG-in-TIFF: recognize SOF2, SOF9 and SOF10
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markers to avoid emitting a warning. Fix for compatibility with mozjpeg library.
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Note: the default settings of mozjpeg will produce progressive scans, which
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is forbidden by the TechNote.
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<li> JPEG-in-TIFF: Fix regression introduced in 3.9.3/4.0.0 that caused
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all tiles/strips to include quantization tables even when the jpegtablesmode
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had the JPEGTABLESMODE_QUANT bit set.
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Also add explicit removal of Huffman tables when jpegtablesmode has the
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JPEGTABLESMODE_HUFF bit set, which avoids Huffman tables to be emitted in the
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first tile/strip (only useful in update scenarios. create-only was
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fine)
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<li> JPEG-in-TIFF: fix segfault in JPEGFixupTagsSubsampling() on
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corrupted image where tif->tif_dir.td_stripoffset == NULL.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2471">#2471</a>)
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<li> NeXT codec: add new tests to check that we don't read outside of
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the compressed input stream buffer.
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<li> NeXT codec: check that BitsPerSample = 2. Fixes
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<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2487">#2487</a> (CVE-2014-8129)
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<li> NeXT codec: in the "run mode", use tilewidth for tiled images
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instead of imagewidth to avoid crash
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<li> tif_getimage.c: in OJPEG case, fix checks on strile width/height
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in the putcontig8bitYCbCr42tile, putcontig8bitYCbCr41tile and
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putcontig8bitYCbCr21tile cases.
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<li> in TIFFDefaultDirectory(), reset any already existing
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extented tags installed by user code through the extender mechaninm before
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calling the extender callback (GDAL #5054)
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<li> Fix warnings about unused parameters.
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<li> Fix various typos in comments found by Debian lintian tool (GDAL #5756)
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<li> tif_getimage.c: avoid divide by zero on invalid YCbCr subsampling.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2235">#2235</a>)
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<li> tif_dirread.c: In EstimateStripByteCounts(), check return code
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of _TIFFFillStriles(). This solves crashing bug on corrupted
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images generated by afl.
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<li>tif_read.c: fix several invalid comparisons of a uint64 value with
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<= 0 by casting it to int64 first. This solves crashing bug on corrupted
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images generated by afl.
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<li>TIFFSetField(): refuse to set negative values for
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TIFFTAG_XRESOLUTION and TIFFTAG_YRESOLUTION that cause asserts when writing
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the directory
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<li>TIFFReadDirectory(): refuse to read ColorMap or
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TransferFunction if BitsPerSample has not yet been read, otherwise reading
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it later will cause user code to crash if BitsPerSample > 1
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<li> TIFFRGBAImageOK(): return FALSE if LOGLUV with
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SamplesPerPixel != 3, or if CIELAB with SamplesPerPixel != 3 or BitsPerSample != 8
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<li> tif_config.vc.h: no longer use "#define snprintf _snprintf" with
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Visual Studio 2015 aka VC 14 aka MSVC 1900
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<li> LZW codec: prevent potential null dereference of sp->dec_codetab in LZWPreDecode
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2459">#2459</a>)
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<li> TIFFReadBufferSetup(): avoid passing -1 size
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to TIFFmalloc() if passed user buffer size is 0
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2459">#2459</a>)
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<li> TIFFReadDirEntryOutputErr(): Incorrect
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count for tag should be a warning rather than an error since
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errors terminate processing.
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<li> tif_dirinfo.c (TIFFField) : Fix data type for TIFFTAG_GLOBALPARAMETERSIFD tag.
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<li> Add definitions for TIFF/EP CFARepeatPatternDim and CFAPattern tags
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2457">#2457</a>)
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<li> tif_codec.c, tif_dirinfo.c: Enlarge some fixed-size buffers that weren't
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large enough, and eliminate substantially all uses of sprintf(buf,
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...) in favor of using snprintf(buf, sizeof(buf), ...)
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<li> configure.ac: Improve pkg-config static linking by adding -lm to Libs.private when needed.
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<li> tif_write.c: tmsize_t related casting warning fixed for
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64bit linux.
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<li> tif_read.c: uint64/tmsize_t change for MSVC warnings.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2427">#2427</a>)
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<li> Fix TIFFPrintDirectory's handling of
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field_passcount fields: it had the TIFF_VARIABLE and
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TIFF_VARIABLE2 cases backwards.
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<li> PixarLog codec: Improve previous patch for CVE-2012-4447
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(to enlarge tbuf for possible partial stride at end) so that
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overflow in the integer addition is detected.
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<li>tif_{unix,vms,win32}.c (_TIFFmalloc): ANSI C does not
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require malloc() to return NULL pointer if requested allocation
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size is zero. Assure that _TIFFmalloc does.
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<li>tif_zip.c: Avoid crash on NULL error messages.
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</UL>
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<P><HR WIDTH=65% ALIGN=left>
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<!-------------------------------------------------------------------------->
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<A NAME="tools"><B><FONT SIZE=+3>C</FONT>HANGES IN THE TOOLS:</B></A>
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<UL>
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<li> tiff2pdf: Fis various crashes and memory buffer access errors (oCERT-2014-013).
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<li> tiff2pdf: fix buffer overflow on some YCbCr JPEG compressed images.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2445">#2445</a>)
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<li> tiff2pdf: fix buffer overflow on YCbCr JPEG compressed image.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2443">#2443</a>)
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<li> tiff2pdf: check return code of TIFFGetField() when reading TIFFTAG_SAMPLESPERPIXEL
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<li> tiff2pdf: fix crash due to invalid tile count.
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<li> tiff2pdf: Detect invalid settings of BitsPerSample/SamplesPerPixel for CIELAB / ITULAB
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<li> tiff2pdf: Assure that memory size calculations for
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_TIFFmalloc() do not overflow the range of tmsize_t.
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<li> tiff2pdf: Avoid crash when TIFFTAG_TRANSFERFUNCTION tag returns one channel,
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with the other two channels set to NULL.
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<li> tiff2pdf: close PDF file. (<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2479">#2479</a>)
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<li> tiff2pdf: Preserve input file directory order when pages
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are tagged with the same page number.
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<li> tiff2pdf.c: terminate after failure of allocating ycbcr buffer
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2449">#2449</a> CVE-2013-4232)
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<li> tiff2pdf: Rewrite JPEG marker parsing in
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t2p_process_jpeg_strip to be at least marginally competent. The
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approach is still fundamentally flawed, but at least now it won't
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stomp all over memory when given bogus input. Fixes CVE-2013-1960.
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<li> tiffdump: Guard against arithmetic overflow when calculating allocation buffer sizes.
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<li> tiffdump: fix crash due to overflow of entry count.
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<li> tiffdump: Fix double-free bug.
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<li> tiffdump: detect cycle in TIFF directory chaining.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2463">#2463</a>)
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<li> tiffdump: avoid passing a NULL pointer to read() if seek() failed before.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2459">#2459</a>)
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<li> tiff2bw: when Photometric=RGB, the utility only works if SamplesPerPixel = 3. Enforce that.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2485">#2485</a>, CVE-2014-8127)
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<li> pal2rgb, thumbnail: fix crash by disabling TIFFTAG_INKNAMES copying.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2484">#2484</a>, CVE-2014-8127)
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<li> thumbnail: fix out-of-buffer write.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2489">#2489</a>, CVE-2014-8128)
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<li> thumbnail, tiffcmp: only read/write TIFFTAG_GROUP3OPTIONS
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or TIFFTAG_GROUP4OPTIONS if compression is COMPRESSION_CCITTFAX3 or
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COMPRESSION_CCITTFAX4.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2493">#2493</a>, CVE-2014-8128)
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<li> tiffcp: fix crash when converting YCbCr JPEG-compressed to none.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2480">#2480</a>)
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<li> bmp2tiff: fix crash due to int overflow related to input BMP dimensions
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<li> tiffcrop: fix crash due to invalid TileWidth/TileHeight
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<li> tiffcrop: fix segfault if bad value passed to -Z option
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( <a href="http://bugzilla.maptools.org/show_bug.cgi?id=2459">#2459</a>)
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and add missing va_end in dump_info
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<li> thumbnail, tiffcrop: "fix" heap read over-run found with
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Valgrind and Address Sanitizer on test suite
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<li> fax2ps: check malloc()/realloc() result. (<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2470">#2470</a>)
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<li> gif2tiff: apply patch for CVE-2013-4243. (<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2451">#2451</a>)
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<li> gif2tiff: fix possible OOB write. (<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2452">#2452</a>, CVE-2013-4244)
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<li> gif2tiff: Be more careful about corrupt or hostile input files (<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2450">#2450</a>, CVE-2013-4231)
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<li> tiff2rgba: fix usage message in that zip was wrongly described
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<li> tiffinfo: Default various values fetched with TIFFGetField() to avoid being uninitialized.
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<li> tiff2ps: Fix bug in auto rotate option code.
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<li> ppm2tiff: avoid zero size buffer vulnerability (CVE-2012-4564).
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check the linebytes calculation too, get the max() calculation
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straight, avoid redundant error messages, check for malloc
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failure.
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<li> tiffset: now supports a -u option to unset a tag.
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(<a href="http://bugzilla.maptools.org/show_bug.cgi?id=2419">#2419</a>)
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<li> Fix warnings about unused parameters.
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<li> rgb2ycbcr, tiff2bw, tiff2pdf, tiff2ps, tiffcrop, tiffdither :
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Enlarge some fixed-size buffers that weren't
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large enough, and eliminate substantially all uses of sprintf(buf,
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...) in favor of using snprintf(buf, sizeof(buf), ...), so as to
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protect against overflow of fixed-size buffers. This responds in
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particular to CVE-2013-1961 concerning overflow in tiff2pdf.c's
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t2p_write_pdf_page().
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<li>html/man/tiff2ps.1.html, html/man/tiffcp.1.html,
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html/man/tiffdither.1.html, man/tiff2ps.1, man/tiffcp.1,
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man/tiffdither.1, tools/tiff2ps.c, tools/tiffcp.c,
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tools/tiffdither.c: Sync tool usage printouts and man pages with
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reality
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</UL>
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<P><HR WIDTH=65% ALIGN=left>
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<!--------------------------------------------------------------------------->
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<A NAME="contrib"><B><FONT SIZE=+3>C</FONT>HANGES IN THE CONTRIB AREA:</B></A>
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<UL>
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<li> Fix warnings about variables set but not used.
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<li> contrib/dbs/xtiff/xtiff.c: Enlarge some fixed-size buffers that weren't
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large enough, and eliminate substantially all uses of sprintf(buf,
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...) in favor of using snprintf(buf, sizeof(buf), ...), so as to
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protect against overflow of fixed-size buffers.
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</UL>
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Last updated $Date: 2016-09-25 20:05:47 $.
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</BODY>
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</HTML>
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