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98 lines
3.0 KiB
ReStructuredText
98 lines
3.0 KiB
ReStructuredText
8.1.0
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-----
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Security
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========
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This release includes security fixes.
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* An out-of-bounds read when saving TIFFs with custom metadata through LibTIFF
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* An out-of-bounds read when saving a GIF of 1px width
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:cve:`2020-35653`: Buffer read overrun in PCX decoding
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The PCX image decoder used the reported image stride to calculate
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the row buffer, rather than calculating it from the image size. This issue dates back
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to the PIL fork. Thanks to Google's `OSS-Fuzz`_ project for finding this.
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:cve:`2020-35654`: TIFF out-of-bounds write error
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Out-of-bounds write in ``TiffDecode.c`` when reading corrupt YCbCr
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files in some LibTIFF versions (4.1.0/Ubuntu 20.04, but not 4.0.9/Ubuntu 18.04).
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In some cases LibTIFF's interpretation of the file is different when reading in RGBA mode,
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leading to an out-of-bounds write in ``TiffDecode.c``. This potentially affects Pillow
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versions from 6.0.0 to 8.0.1, depending on the version of LibTIFF. This was reported through
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`Tidelift`_.
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:cve:`2020-35655`: SGI decode buffer overrun
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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4 byte read overflow in ``SgiRleDecode.c``, where the code was not correctly
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checking the offsets and length tables. Independently reported through `Tidelift`_ and Google's
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`OSS-Fuzz`_. This vulnerability covers Pillow versions 4.3.0->8.0.1.
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.. _Tidelift: https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pillow&utm_medium=referral&utm_campaign=docs
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.. _OSS-Fuzz: https://github.com/google/oss-fuzz
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Dependencies
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^^^^^^^^^^^^
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OpenJPEG in the macOS and Linux wheels has been updated from 2.3.1 to 2.4.0, including
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security fixes.
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LibTIFF in the macOS and Linux wheels has been updated from 4.1.0 to 4.2.0, including
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security fixes discovered by fuzzers.
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Deprecations
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============
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FreeType 2.7
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^^^^^^^^^^^^
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Support for FreeType 2.7 is deprecated and will be removed in Pillow 9.0.0 (2022-01-02),
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when FreeType 2.8 will be the minimum supported.
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We recommend upgrading to at least FreeType `2.10.4`_, which fixed a severe
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vulnerability introduced in FreeType 2.6 (:cve:`2020-15999`).
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.. _2.10.4: https://sourceforge.net/projects/freetype/files/freetype2/2.10.4/
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Makefile
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^^^^^^^^
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The ``install-venv`` target has been deprecated.
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API additions
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=============
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Append images to ICO
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^^^^^^^^^^^^^^^^^^^^
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When saving an ICO image, the file may contain versions of the image at different
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sizes. By default, Pillow will scale down the main image to create these copies.
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With this release, a list of images can be provided to the ``append_images`` parameter
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when saving, to replace the scaled down versions. This is the same functionality that
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already exists for the ICNS format.
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Other changes
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=============
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Makefile
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^^^^^^^^
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The ``co`` target has been removed.
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PyPy wheels
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^^^^^^^^^^^
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Wheels have been added for PyPy 3.7.
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PySide6
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^^^^^^^
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Support has been added for PySide6. If it is installed, it will be used instead of
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PyQt5 or PySide2, since it is based on a newer Qt.
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