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<section id="changes-in-tiff-v4-0-4beta">
<h1>Changes in TIFF v4.0.4beta<a class="headerlink" href="#changes-in-tiff-v4-0-4beta" title="Permalink to this heading">¶</a></h1>
<table class="docutils align-default" id="id2">
<caption><span class="caption-text">References</span><a class="headerlink" href="#id2" title="Permalink to this table">¶</a></caption>
<tbody>
<tr class="row-odd"><td><p>Current Version</p></td>
<td><p>v4.0.4beta (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/tags/Release-v4-0-4beta">tag Release-v4-0-4beta</a>)</p></td>
</tr>
<tr class="row-even"><td><p>Previous Version</p></td>
<td><p><a class="reference internal" href="v4.0.3.html"><span class="doc">v4.0.3</span></a></p></td>
</tr>
<tr class="row-odd"><td><p>Master Download Site</p></td>
<td><p><a class="reference external" href="https://download.osgeo.org/libtiff/">https://download.osgeo.org/libtiff/</a></p></td>
</tr>
<tr class="row-even"><td><p>Master HTTP Site</p></td>
<td><p><a class="reference external" href="https://download.osgeo.org/libtiff/">https://download.osgeo.org/libtiff/</a></p></td>
</tr>
</tbody>
</table>
<p>This document describes the changes made to the software between the
<em>previous</em> and <em>current</em> versions (see above). If you don’t
find something listed here, then it was not done in this timeframe, or
it was not considered important enough to be mentioned. The following
information is located here:</p>
<section id="major-changes">
<h2>Major changes<a class="headerlink" href="#major-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li><p>None</p></li>
</ul>
</section>
<section id="software-configuration-changes">
<h2>Software configuration changes<a class="headerlink" href="#software-configuration-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li><p>Updated to use Automake 1.15 and Libtool 2.4.5</p></li>
</ul>
</section>
<section id="library-changes">
<h2>Library changes<a class="headerlink" href="#library-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li><p><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFCheckDirOffset()</span></code>: avoid <code class="xref c c-type docutils literal notranslate"><span class="pre">uint16</span></code> overflow
when reading more than 65535 directories, and effectively error out when
reaching that limit.</p></li>
<li><p><a class="reference internal" href="../functions/TIFFquery.html#c.TIFFNumberOfDirectories" title="TIFFNumberOfDirectories"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFNumberOfDirectories()</span></code></a>: generate error in case of directory count
overflow.</p></li>
<li><p><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFAdvanceDirectory()</span></code>: If nextdir is found to
be defective, then set it to zero before returning error in order
to terminate processing of truncated TIFF.</p></li>
<li><p>JPEG-in-TIFF: recognize <code class="docutils literal notranslate"><span class="pre">SOF2</span></code>, <code class="docutils literal notranslate"><span class="pre">SOF9</span></code> and <code class="docutils literal notranslate"><span class="pre">SOF10</span></code>
markers to avoid emitting a warning. Fix for compatibility with mozjpeg library.
Note: the default settings of mozjpeg will produce progressive scans, which
is forbidden by the TechNote.</p></li>
<li><p>JPEG-in-TIFF: Fix regression introduced in 3.9.3/4.0.0 that caused
all tiles/strips to include quantization tables even when the jpegtablesmode
had the <code class="xref c c-macro docutils literal notranslate"><span class="pre">JPEGTABLESMODE_QUANT</span></code> bit set.
Also add explicit removal of Huffman tables when jpegtablesmode has the
<code class="xref c c-macro docutils literal notranslate"><span class="pre">JPEGTABLESMODE_HUFF</span></code> bit set, which avoids Huffman tables to be emitted in the
first tile/strip (only useful in update scenarios. create-only was
fine)</p></li>
<li><p>JPEG-in-TIFF: fix segfault in <code class="xref c c-func docutils literal notranslate"><span class="pre">JPEGFixupTagsSubsampling()</span></code> on
corrupted image where <code class="docutils literal notranslate"><span class="pre">tif->tif_dir.td_stripoffset</span> <span class="pre">==</span> <span class="pre">NULL</span></code>.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2471">MapTools bugzilla #2471</a>)</p></li>
<li><p>NeXT codec: add new tests to check that we don’t read outside of
the compressed input stream buffer.</p></li>
<li><p>NeXT codec: check that <code class="docutils literal notranslate"><span class="pre">BitsPerSample</span></code> = 2. Fixes
<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2487">MapTools bugzilla #2487</a> (<a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8129">CVE-2014-8129</a>)</p></li>
<li><p>NeXT codec: in the “run mode”, use tilewidth for tiled images
instead of imagewidth to avoid crash</p></li>
<li><p>tif_getimage.c: in OJPEG case, fix checks on strile width/height
in the <code class="docutils literal notranslate"><span class="pre">putcontig8bitYCbCr42tile</span></code>, <code class="docutils literal notranslate"><span class="pre">putcontig8bitYCbCr41tile</span></code> and
<code class="docutils literal notranslate"><span class="pre">putcontig8bitYCbCr21tile</span></code> cases.</p></li>
<li><p>in <code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFDefaultDirectory()</span></code>, reset any already existing
extended tags installed by user code through the extender mechaninm before
calling the extender callback (GDAL #5054)</p></li>
<li><p>Fix warnings about unused parameters.</p></li>
<li><p>Fix various typos in comments found by Debian lintian tool (GDAL #5756)</p></li>
<li><p>tif_getimage.c: avoid divide by zero on invalid YCbCr subsampling.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2235">MapTools bugzilla #2235</a>)</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">tif_dirread.c</span></code>: In <code class="xref c c-func docutils literal notranslate"><span class="pre">EstimateStripByteCounts()</span></code>, check return code
of <code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFFillStriles()</span></code>. This solves crashing bug on corrupted
images generated by afl.</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">tif_read.c</span></code>: fix several invalid comparisons of a <code class="xref c c-type docutils literal notranslate"><span class="pre">uint64</span></code> value with
<code class="docutils literal notranslate"><span class="pre"><=</span> <span class="pre">0</span></code> by casting it to <code class="xref c c-type docutils literal notranslate"><span class="pre">int64</span></code> first. This solves crashing bug on corrupted
images generated by afl.</p></li>
<li><p><a class="reference internal" href="../functions/TIFFSetField.html#c.TIFFSetField" title="TIFFSetField"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFSetField()</span></code></a>: refuse to set negative values for
<code class="xref c c-macro docutils literal notranslate"><span class="pre">TIFFTAG_XRESOLUTION</span></code> and <code class="xref c c-macro docutils literal notranslate"><span class="pre">TIFFTAG_YRESOLUTION</span></code> that cause asserts when writing
the directory</p></li>
<li><p><a class="reference internal" href="../functions/TIFFReadDirectory.html#c.TIFFReadDirectory" title="TIFFReadDirectory"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFReadDirectory()</span></code></a>: refuse to read <code class="docutils literal notranslate"><span class="pre">ColorMap</span></code> or
<code class="docutils literal notranslate"><span class="pre">TransferFunction</span></code> if <code class="docutils literal notranslate"><span class="pre">BitsPerSample</span></code> has not yet been read, otherwise reading
it later will cause user code to crash if <code class="docutils literal notranslate"><span class="pre">BitsPerSample</span> <span class="pre">></span> <span class="pre">1</span></code></p></li>
<li><p><a class="reference internal" href="../functions/TIFFRGBAImage.html#c.TIFFRGBAImageOK" title="TIFFRGBAImageOK"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFRGBAImageOK()</span></code></a>: return FALSE if LOGLUV with
<code class="docutils literal notranslate"><span class="pre">SamplesPerPixel</span> <span class="pre">!=</span> <span class="pre">3</span></code>, or if CIELAB with
<code class="docutils literal notranslate"><span class="pre">SamplesPerPixel</span> <span class="pre">!=</span> <span class="pre">3</span></code> or <code class="docutils literal notranslate"><span class="pre">BitsPerSample</span> <span class="pre">!=</span> <span class="pre">8</span></code></p></li>
<li><dl class="simple">
<dt><code class="file docutils literal notranslate"><span class="pre">tif_config.vc.h</span></code>: no longer use <code class="docutils literal notranslate"><span class="pre">#define</span> <span class="pre">snprintf</span> <span class="pre">_snprintf</span></code> with</dt><dd><p>Visual Studio 2015 aka VC 14 aka MSVC 1900</p>
</dd>
</dl>
</li>
<li><p>LZW codec: prevent potential null dereference of <code class="docutils literal notranslate"><span class="pre">sp->dec_codetab</span></code> in <code class="xref c c-func docutils literal notranslate"><span class="pre">LZWPreDecode()</span></code>
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2459">MapTools bugzilla #2459</a>)</p></li>
<li><p><a class="reference internal" href="../functions/TIFFbuffer.html#c.TIFFReadBufferSetup" title="TIFFReadBufferSetup"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFReadBufferSetup()</span></code></a>: avoid passing -1 size
to <code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFmalloc()</span></code> if passed user buffer size is 0
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2459">MapTools bugzilla #2459</a>)</p></li>
<li><p><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFReadDirEntryOutputErr()</span></code>: Incorrect
count for tag should be a warning rather than an error since
errors terminate processing.</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">tif_dirinfo.c</span></code> (<code class="docutils literal notranslate"><span class="pre">TIFFField</span></code>) : Fix data type for <code class="xref c c-macro docutils literal notranslate"><span class="pre">TIFFTAG_GLOBALPARAMETERSIFD</span></code> tag.</p></li>
<li><p>Add definitions for TIFF/EP <code class="docutils literal notranslate"><span class="pre">CFARepeatPatternDim</span></code> and <code class="docutils literal notranslate"><span class="pre">CFAPattern</span></code> tags
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2457">MapTools bugzilla #2457</a>)</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">tif_codec.c</span></code>, <code class="file docutils literal notranslate"><span class="pre">tif_dirinfo.c</span></code>: Enlarge some fixed-size buffers that weren’t
large enough, and eliminate substantially all uses of <code class="docutils literal notranslate"><span class="pre">sprintf(buf,</span>
<span class="pre">...)</span></code> in favor of using <code class="docutils literal notranslate"><span class="pre">snprintf(buf,</span> <span class="pre">sizeof(buf),</span> <span class="pre">...)</span></code></p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">configure.ac</span></code>: Improve pkg-config static linking by adding <code class="docutils literal notranslate"><span class="pre">-lm</span></code> to <code class="docutils literal notranslate"><span class="pre">Libs.private</span></code> when needed.</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">tif_write.c</span></code>: <code class="xref c c-type docutils literal notranslate"><span class="pre">tmsize_t</span></code> related casting warning fixed for
64bit linux.</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">tif_read.c</span></code>: <code class="xref c c-type docutils literal notranslate"><span class="pre">uint64</span></code>/<code class="xref c c-type docutils literal notranslate"><span class="pre">tmsize_t</span></code> change for MSVC warnings.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2427">MapTools bugzilla #2427</a>)</p></li>
<li><p>Fix <a class="reference internal" href="../functions/TIFFPrintDirectory.html#c.TIFFPrintDirectory" title="TIFFPrintDirectory"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFPrintDirectory()</span></code></a> handling of
<code class="xref c c-member docutils literal notranslate"><span class="pre">field_passcount</span></code> fields: it had the <code class="xref c c-macro docutils literal notranslate"><span class="pre">TIFF_VARIABLE</span></code> and
<code class="xref c c-macro docutils literal notranslate"><span class="pre">TIFF_VARIABLE2</span></code> cases backwards.</p></li>
<li><p>PixarLog codec: Improve previous patch for <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4447">CVE-2012-4447</a>
(to enlarge <code class="xref c c-member docutils literal notranslate"><span class="pre">tbuf</span></code> for possible partial stride at end) so that
overflow in the integer addition is detected.</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">tif_</span><em><span class="pre">unix,vms,win32</span></em><span class="pre">.c</span></code> (<a class="reference internal" href="../functions/TIFFmemory.html#c._TIFFmalloc" title="_TIFFmalloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFmalloc()</span></code></a>): ANSI C does not
require <code class="xref c c-func docutils literal notranslate"><span class="pre">malloc()</span></code> to return <code class="xref c c-macro docutils literal notranslate"><span class="pre">NULL</span></code> pointer if requested allocation
size is zero. Assure that <a class="reference internal" href="../functions/TIFFmemory.html#c._TIFFmalloc" title="_TIFFmalloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFmalloc()</span></code></a> does.</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">tif_zip.c</span></code>: Avoid crash on <code class="xref c c-macro docutils literal notranslate"><span class="pre">NULL</span></code> error messages.</p></li>
</ul>
</section>
<section id="tools-changes">
<h2>Tools changes<a class="headerlink" href="#tools-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li><p><strong class="program">tiff2pdf</strong> Fix various crashes and memory buffer access errors (oCERT-2014-013).</p></li>
<li><p><strong class="program">tiff2pdf</strong> fix buffer overflow on some YCbCr JPEG compressed images.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2445">MapTools bugzilla #2445</a>)</p></li>
<li><p><strong class="program">tiff2pdf</strong> fix buffer overflow on YCbCr JPEG compressed image.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2443">MapTools bugzilla #2443</a>)</p></li>
<li><p><strong class="program">tiff2pdf</strong> check return code of <a class="reference internal" href="../functions/TIFFGetField.html#c.TIFFGetField" title="TIFFGetField"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFGetField()</span></code></a> when reading <code class="xref c c-macro docutils literal notranslate"><span class="pre">TIFFTAG_SAMPLESPERPIXEL</span></code></p></li>
<li><p><strong class="program">tiff2pdf</strong> fix crash due to invalid tile count.</p></li>
<li><p><strong class="program">tiff2pdf</strong> Detect invalid settings of <code class="docutils literal notranslate"><span class="pre">BitsPerSample</span></code>/<code class="docutils literal notranslate"><span class="pre">SamplesPerPixel</span></code> for CIELAB / ITULAB</p></li>
<li><p><strong class="program">tiff2pdf</strong> Assure that memory size calculations for
<a class="reference internal" href="../functions/TIFFmemory.html#c._TIFFmalloc" title="_TIFFmalloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFmalloc()</span></code></a> do not overflow the range of <code class="xref c c-type docutils literal notranslate"><span class="pre">tmsize_t</span></code>.</p></li>
<li><p><strong class="program">tiff2pdf</strong> Avoid crash when <code class="xref c c-macro docutils literal notranslate"><span class="pre">TIFFTAG_TRANSFERFUNCTION</span></code> tag returns one channel,
with the other two channels set to <code class="xref c c-macro docutils literal notranslate"><span class="pre">NULL</span></code>.</p></li>
<li><p><strong class="program">tiff2pdf</strong> close PDF file. (<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2479">MapTools bugzilla #2479</a>)</p></li>
<li><p><strong class="program">tiff2pdf</strong> Preserve input file directory order when pages
are tagged with the same page number.</p></li>
<li><p><strong class="program">tiff2pdf.c</strong> terminate after failure of allocating ycbcr buffer
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2449">MapTools bugzilla #2449</a>, <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4232">CVE-2013-4232</a>)</p></li>
<li><p><strong class="program">tiff2pdf</strong> Rewrite JPEG marker parsing in
<code class="xref c c-func docutils literal notranslate"><span class="pre">t2p_process_jpeg_strip()</span></code> to be at least marginally competent. The
approach is still fundamentally flawed, but at least now it won’t
stomp all over memory when given bogus input. Fixes <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1960">CVE-2013-1960</a>.</p></li>
<li><p><strong class="program">tiffdump</strong> Guard against arithmetic overflow when calculating allocation buffer sizes.</p></li>
<li><p><strong class="program">tiffdump</strong> fix crash due to overflow of entry count.</p></li>
<li><p><strong class="program">tiffdump</strong> Fix double-free bug.</p></li>
<li><p><strong class="program">tiffdump</strong> detect cycle in TIFF directory chaining.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2463">MapTools bugzilla #2463</a>)</p></li>
<li><p><strong class="program">tiffdump</strong> avoid passing a <code class="xref c c-macro docutils literal notranslate"><span class="pre">NULL</span></code> pointer to <code class="xref c c-func docutils literal notranslate"><span class="pre">read()</span></code> if <code class="xref c c-func docutils literal notranslate"><span class="pre">seek()</span></code> failed before.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2459">MapTools bugzilla #2459</a>)</p></li>
<li><p><strong class="program">tiff2bw</strong> when <code class="docutils literal notranslate"><span class="pre">Photometric</span> <span class="pre">=</span> <span class="pre">RGB</span></code>, the utility only works if <code class="docutils literal notranslate"><span class="pre">SamplesPerPixel</span> <span class="pre">=</span> <span class="pre">3</span></code>. Enforce that.
(:bugzilla:2485`, <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8127">CVE-2014-8127</a>)</p></li>
<li><p><strong class="program">pal2rgb</strong>, <strong class="program">thumbnail</strong>: fix crash by disabling <code class="xref c c-macro docutils literal notranslate"><span class="pre">TIFFTAG_INKNAMES</span></code> copying.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=#2484">MapTools bugzilla ##2484</a>, <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8127">CVE-2014-8127</a>)</p></li>
<li><p><strong class="program">thumbnail</strong> fix out-of-buffer write.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2489">MapTools bugzilla #2489</a>, <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8128">CVE-2014-8128</a>)</p></li>
<li><p><strong class="program">thumbnail</strong>, <strong class="program">tiffcmp</strong>: only read/write <code class="xref c c-macro docutils literal notranslate"><span class="pre">TIFFTAG_GROUP3OPTIONS</span></code>
or <code class="xref c c-macro docutils literal notranslate"><span class="pre">TIFFTAG_GROUP4OPTIONS</span></code> if compression is <code class="xref c c-macro docutils literal notranslate"><span class="pre">COMPRESSION_CCITTFAX3</span></code> or
<code class="xref c c-macro docutils literal notranslate"><span class="pre">COMPRESSION_CCITTFAX4</span></code>.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2493">MapTools bugzilla #2493</a>, <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8128">CVE-2014-8128</a>)</p></li>
<li><p><strong class="program">tiffcp</strong> fix crash when converting YCbCr JPEG-compressed to none.
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2480">MapTools bugzilla #2480</a>)</p></li>
<li><p><strong class="program">bmp2tiff</strong> fix crash due to int overflow related to input BMP dimensions</p></li>
<li><p><strong class="program">tiffcrop</strong> fix crash due to invalid <code class="docutils literal notranslate"><span class="pre">TileWidth</span></code>/<code class="docutils literal notranslate"><span class="pre">TileHeight</span></code></p></li>
<li><p><strong class="program">tiffcrop</strong> fix segfault if bad value passed to <code class="docutils literal notranslate"><span class="pre">-Z</span></code> option
(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2459">MapTools bugzilla #2459</a>) and add missing <code class="docutils literal notranslate"><span class="pre">va_end</span></code> in <code class="xref c c-func docutils literal notranslate"><span class="pre">dump_info()</span></code></p></li>
<li><p><strong class="program">thumbnail</strong>, <strong class="program">tiffcrop</strong>: “fix” heap read over-run found with
Valgrind and Address Sanitizer on test suite</p></li>
<li><p><strong class="program">fax2ps</strong> check <code class="xref c c-func docutils literal notranslate"><span class="pre">malloc()</span></code>/<code class="xref c c-func docutils literal notranslate"><span class="pre">realloc()</span></code> result. (<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2470">MapTools bugzilla #2470</a>)</p></li>
<li><p><strong class="program">gif2tiff</strong> apply patch for <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4243">CVE-2013-4243</a>. (<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2451">MapTools bugzilla #2451</a>)</p></li>
<li><p><strong class="program">gif2tiff</strong> fix possible OOB write. (<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2452">MapTools bugzilla #2452</a>, <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4244">CVE-2013-4244</a>)</p></li>
<li><p><strong class="program">gif2tiff</strong> Be more careful about corrupt or hostile input files (<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2450">MapTools bugzilla #2450</a>, <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4231">CVE-2013-4231</a>)</p></li>
<li><p><strong class="program">tiff2rgba</strong> fix usage message in that zip was wrongly described</p></li>
<li><p><strong class="program">tiffinfo</strong> Default various values fetched with <a class="reference internal" href="../functions/TIFFGetField.html#c.TIFFGetField" title="TIFFGetField"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFGetField()</span></code></a> to avoid being uninitialized.</p></li>
<li><p><strong class="program">tiff2ps</strong> Fix bug in auto rotate option code.</p></li>
<li><p><strong class="program">ppm2tiff</strong> avoid zero size buffer vulnerability (<a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4564">CVE-2012-4564</a>).
check the linebytes calculation too, get the <code class="xref c c-func docutils literal notranslate"><span class="pre">max()</span></code> calculation
straight, avoid redundant error messages, check for <code class="xref c c-func docutils literal notranslate"><span class="pre">malloc()</span></code>
failure.</p></li>
<li><dl class="simple">
<dt><strong class="program">tiffset</strong> now supports a <code class="docutils literal notranslate"><span class="pre">-u</span></code> option to unset a tag.</dt><dd><p>(<a class="reference external" href="http://bugzilla.maptools.org/show_bug.cgi?id=2419">MapTools bugzilla #2419</a>)</p>
</dd>
</dl>
</li>
<li><p>Fix warnings about unused parameters.</p></li>
<li><p><strong class="program">rgb2ycbcr</strong>, <strong class="program">tiff2bw</strong>, <strong class="program">tiff2pdf</strong>, <strong class="program">tiff2ps</strong>, <strong class="program">tiffcrop</strong>, <strong class="program">tiffdither</strong>:
Enlarge some fixed-size buffers that weren’t
large enough, and eliminate substantially all uses of <code class="docutils literal notranslate"><span class="pre">sprintf(buf,</span>
<span class="pre">...)</span></code> in favor of using <code class="docutils literal notranslate"><span class="pre">snprintf(buf,</span> <span class="pre">sizeof(buf),</span> <span class="pre">...)</span></code>, so as to
protect against overflow of fixed-size buffers. This responds in
particular to <a class="reference external" href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1961">CVE-2013-1961</a> concerning overflow in <code class="file docutils literal notranslate"><span class="pre">tiff2pdf.c</span></code>’s
<code class="xref c c-func docutils literal notranslate"><span class="pre">t2p_write_pdf_page()</span></code>.</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">html/man/tiff2ps.1.html</span></code>, <code class="file docutils literal notranslate"><span class="pre">html/man/tiffcp.1.html</span></code>,
<code class="file docutils literal notranslate"><span class="pre">html/man/tiffdither.1.html</span></code>, <code class="file docutils literal notranslate"><span class="pre">man/tiff2ps.1</span></code>, <code class="file docutils literal notranslate"><span class="pre">man/tiffcp.1</span></code>,
<code class="file docutils literal notranslate"><span class="pre">man/tiffdither.1</span></code>, <code class="file docutils literal notranslate"><span class="pre">tools/tiff2ps.c</span></code>, <code class="file docutils literal notranslate"><span class="pre">tools/tiffcp.c</span></code>,
<code class="file docutils literal notranslate"><span class="pre">tools/tiffdither.c</span></code>: Sync tool usage printouts and man pages with
reality</p></li>
</ul>
</section>
<section id="contributed-software-changes">
<h2>Contributed software changes<a class="headerlink" href="#contributed-software-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li><p>Fix warnings about variables set but not used.</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">contrib/dbs/xtiff/xtiff.c</span></code>: Enlarge some fixed-size buffers that weren’t
large enough, and eliminate substantially all uses of <code class="docutils literal notranslate"><span class="pre">sprintf(buf,</span>
<span class="pre">...)</span></code> in favor of using <code class="docutils literal notranslate"><span class="pre">snprintf(buf,</span> <span class="pre">sizeof(buf),</span> <span class="pre">...)</span></code>, so as to
protect against overflow of fixed-size buffers.</p></li>
</ul>
</section>
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