Changes in TIFF v3.9.5 ====================== .. table:: References :widths: auto ====================== ========================================== Current Version v3.9.5 (:tag:`Release-v3-9-5`) Previous Version :doc:`v3.9.4 ` Master Download Site ``_ Master HTTP Site ``_ ====================== ========================================== This document describes the changes made to the software between the *previous* and *current* 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: Major changes ------------- * None Software configuration changes ------------------------------ * :file:`configure.ac`: Should use ``AC_CANONICAL_HOST`` since host specifies the run-time target whereas target is used to specify the final output target if the package is a build tool (like a compiler), which libtiff is not. Resolves :bugzilla:`2307` "Use AC_CANONICAL_HOST macro". Library changes --------------- * :file:`libtiff/tif_getimage.c`: Check the number of samples per pixel when working with YCbCr image in :c:func:`PickContigCase`. As per bug :bugzilla:`2216` * :file:`libtiff/tif_dir.c`: Set the bogus post-decoding hook when processing :c:macro:`TIFFTAG_BITSPERSAMPLE` in :c:func:`_TIFFVSetField` for the case of 8 bit when we don't need any post-processing. That helps to reset the hook if we previously set this field to some other value and the hook was initialized accordingly. As per bug :bugzilla:`2035` * :file:`libtiff/tif_getimage.c`: Avoid wrong math du to the signed/unsigned integer type conversions. As per bug :bugzilla:`2207` * :file:`libtiff/tif_dirinfo.c`: Don't use assertions in :c:func:`_TIFFFieldWithTag` and :c:func:`_TIFFFieldWithName` if the tag is not found in the tag table. This should be normal situation and returned :c:macro:`NULL` value should be properly handled by the caller. * :file:`libtiff/{tif_dirwrite.c, tif_print.c}`: Properly handle ``DotRange`` tag as it can be either byte or short size and should be set and read by value, not as an array. As per bug :bugzilla:`2116` * :file:`libtiff/tif_dirread.c`: Really reset the tag count in :c:func:`CheckDirCount` to expected value as the warning message suggests. As per bug :bugzilla:`1963` * :file:`libtiff/tif_open.c`: Fix mode check before opening a file. :bugzilla:`1906` * :file:`libtiff/tif_jpeg.c`, :file:`libtiff/tif_strip.c`: apply patch for :cve:`2010-3087` per bug :bugzilla:`2140` * :file:`libtiff/tif_dirread.c`: fix crash when reading a badly-constructed TIFF per :bugzilla:`1994` * :file:`libtiff/tif_ojpeg.c`: fix buffer overflow on problem data :bugzilla:`1999` * :file:`libtiff/tif_dirread.c`: modify warnings :bugzilla:`2016` * :file:`libtiff/tif_jpeg.c`: fix use of clumplines calculation :bugzilla:`2149` * :file:`libtiff/tif_color.c`: prevent crash in handling bad TIFFs resolves :cve:`2010-2595`, :bugzilla:`2208` * :file:`libtiff/tif_dirread.c`: fix needless tag ordering warning :bugzilla:`2210` * :file:`libtiff/tif_jpeg.c`: reduce usage of ``JCS_UNKNOWN`` in order to improve compatibility with various viewers submitted by e-mail from `Dwight Kelly `_ * :file:`libtiff/tif_strip.c`: use :c:func:`TIFFGetFieldDefaulted` instead of :c:func:`TIFFGetField` when we assume that it will succeed :bugzilla:`2215` * :file:`libtiff/tif_dirread.c`: tolerate some cases where ``FIELD_COLORMAP`` is missing :bugzilla:`2189` * :file:`libtiff/tif_jpeg.c`: Fix regressions with 2 and 3 band images caused by commit on 2010-12-14. Submitted by e-mail from `Even Rouault `_ * :file:`libtiff/tif_dirwrite.c`: Avoid undefined behaviour when casting from :c:expr:`float` to :c:expr:`unsigned int` in :c:func:`TIFFWriteRationalArray` as reported by Kareem Shehata. * :file:`libtiff/tif_fax3.h`: Protect against a fax ``VL(n)`` codeword commanding a move left. Without this, a malicious input file can generate an indefinitely large series of runs without ``a0`` ever reaching the right margin, thus overrunning our buffer of run lengths. Per :cve:`2011-0192`. This is a modified version of a patch proposed by Drew Yao of Apple Product Security. It adds an :c:func:`unexpected` report, and disallows the equality case, since emitting a run without increasing ``a0`` still allows buffer overrun. * :file:`libtiff/tif_fax3.h`: Fix to last change allowing zero length runs at the start of a scanline---needed for legal cases. * :file:`libtiff/tif_thunder.c`: Correct potential buffer overflow with thunder encoded files with wrong bitspersample set. The libtiff development team would like to thank Marin Barbella and TippingPoint's Zero Day Initiative for reporting this vulnerability (ZDI-CAN-1004, :cve:`2011-1167`). :bugzilla:`2300` * :file:`libtiff/tiffiop.h`: avoid declaring :c:type:`int64`/:c:type:`uint64` on AIX with XLC where they are already available. (:bugzilla:`2301`) Tools changes ------------- * :file:`tools/tiffcrop.c`: Patch from Richard Nolde. Reject YCbCr subsampled data since tiffcrop currently doesn't support it. Fix JPEG support. * :file:`tools/tiffcp.c`: Initialize buffer arrays with zero to avoid referencing to uninitialized memory in some cases (e.g. when tile size set bigger than the image size). * :file:`tools/tiff2pdf.c`: Better generation of ID field in :c:func:`t2p_write_pdf_trailer`. Get rid of GCC aliasing warnings. * :file:`tools/tiff2pdf.c`: Fixed computation of the tile buffer size when converting JPEG encoded tiles. * :file:`tools/tiff2pdf.c`: Better handling of string fields, use static string buffers instead of dynamically allocated, use :c:func:`strncpy` instead of :c:func:`strcpy`, control the string lengths. * :file:`tools/tiff2bw.c`, :file:`tools/thumbnail.c`, :file:`tools/pal2rgb.c`: Fix the count for ``WhitePoint`` tag as per bug :bugzilla:`2042` * :file:`tools/tiffdump.c`: Use :c:func:`PrintData` function instead of :c:func:`PrintByte`/:c:func:`PrintShort`/:c:func:`PrintLong`. Should fix an issue reported at :bugzilla:`2116` * :file:`tools/tiffset.c`: Properly handle ``TIFFTAG_PAGENUMBER``, ``TIFFTAG_HALFTONEHINTS``, ``TIFFTAG_YCBCRSUBSAMPLING``, ``TIFFTAG_DOTRANGE`` which should be set by value. * :file:`tools/tiffdump.c`: Avoid integer overflows computing the buffer size for large directories. As per bug :bugzilla:`2218` * :file:`tools/tiff2pdf.c`: Fixed ID buffer filling in :c:func:`t2p_write_pdf_trailer`, thanks to Dmitry V. Levin. * :file:`tools/tiffcrop.c`: Patch from Richard Nolde to avoid a potentially unterminated buffer due to using an exceptionally long file name. * :file:`tools/tiff2ps.c`: improvements and enhancements from Richard Nolde with additional command line options for Document Title, Document Creator, and Page Orientation * :file:`tools/tiffsplit.c`: abort when reading a TIFF without a byte-count per :bugzilla:`1996` * :file:`tools/tiff2pdf.c`: add fill-page option :bugzilla:`2051` * :file:`tools/fax2ps.c`: replace unsafe :c:func:`tmpfile` with :c:func:`mkstemp` :bugzilla:`2118` * :file:`tools/tiff2pdf.c`: fix colors for images with RGBA interleaved data :bugzilla:`2250` * :file:`tools/tiffcrop.c`: new release by Richard Nolde :bugzilla:`2004` * :file:`tools/fax2ps.c`: be consistent with page-numbering :bugzilla:`2225` * :file:`tools/gif2tiff.c`: fix buffer overrun :bugzilla:`2270` * :file:`tools/fax2ps.c` (:c:func:`main`): Use :c:func:`tmpfile` rather than :c:func:`mkstemp` since it is much more portable. Tmpfile is included in ISO/IEC 9899:1990 and the WIN32 CRT. Contributed software changes ---------------------------- * None