CVE-2021-28678

An issue was discovered in Pillow before 8.2.0. For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run a large number of times on empty data.

An issue was discovered in Pillow before 8.2.0. For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run a large number of times on empty data.

The python-pillow packages contain a Python image processing library that provides extensive file format support, an efficient internal representation, and powerful image-processing capabilities.

Security Fix(es):

• python-pillow: Out-of-bounds read in J2K image reader (CVE-2021-25287)

• python-pillow: Out-of-bounds read in J2K image reader (CVE-2021-25288)

• python-pillow: Negative-offset memcpy in TIFF image reader (CVE-2021-25290)

• python-pillow: Regular expression DoS in PDF format parser (CVE-2021-25292)

• python-pillow: Out-of-bounds read in SGI RLE image reader (CVE-2021-25293)

• python-pillow: Excessive memory allocation in BLP image reader (CVE-2021-27921)

• python-pillow: Excessive memory allocation in ICNS image reader (CVE-2021-27922)

• python-pillow: Excessive memory allocation in ICO image reader (CVE-2021-27923)

• python-pillow: Excessive memory allocation in PSD image reader (CVE-2021-28675)

• python-pillow: Infinite loop in FLI image reader (CVE-2021-28676)

• python-pillow: Excessive CPU use in EPS image reader (CVE-2021-28677)

• python-pillow: Excessive looping in BLP image reader (CVE-2021-28678)

• python-pillow: Buffer overflow in image convert function (CVE-2021-34552)

• python-pillow: Buffer over-read in PCX image reader (CVE-2020-35653)

• python-pillow: Buffer over-read in SGI RLE image reader (CVE-2020-35655)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.

An issue was discovered in Pillow before 8.2.0. For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run a large number of times on empty data.

The python-pillow packages contain a Python image processing library that provides extensive file format support, an efficient internal representation, and powerful image-processing capabilities.

Security Fix(es):

• python-pillow: Out-of-bounds read in J2K image reader (CVE-2021-25287)

• python-pillow: Out-of-bounds read in J2K image reader (CVE-2021-25288)

• python-pillow: Negative-offset memcpy in TIFF image reader (CVE-2021-25290)

• python-pillow: Regular expression DoS in PDF format parser (CVE-2021-25292)

• python-pillow: Out-of-bounds read in SGI RLE image reader (CVE-2021-25293)

• python-pillow: Excessive memory allocation in BLP image reader (CVE-2021-27921)

• python-pillow: Excessive memory allocation in ICNS image reader (CVE-2021-27922)

• python-pillow: Excessive memory allocation in ICO image reader (CVE-2021-27923)

• python-pillow: Excessive memory allocation in PSD image reader (CVE-2021-28675)

• python-pillow: Infinite loop in FLI image reader (CVE-2021-28676)

• python-pillow: Excessive CPU use in EPS image reader (CVE-2021-28677)

• python-pillow: Excessive looping in BLP image reader (CVE-2021-28678)

• python-pillow: Buffer overflow in image convert function (CVE-2021-34552)

• python-pillow: Buffer over-read in PCX image reader (CVE-2020-35653)

• python-pillow: Buffer over-read in SGI RLE image reader (CVE-2020-35655)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

An issue was discovered in Pillow before 8.2.0. For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run a large number of times on empty data.

Updated python-pillow packages fix security vulnerabilities:

An issue was discovered in Pillow before 8.2.0. There is an out-of-bounds read in J2kDecode, in j2ku_graya_la (CVE-2021-25287).

An issue was discovered in Pillow before 8.2.0. There is an out-of-bounds read in J2kDecode, in j2ku_gray_i (CVE-2021-25288).

An issue was discovered in Pillow before 8.2.0. PSDImagePlugin.PsdImageFile lacked a sanity check on the number of input layers relative to the size of the data block. This could lead to a DoS on Image.open prior to Image.load (CVE-2021-28675).

An issue was discovered in Pillow before 8.2.0. For FLI data, FliDecode did not properly check that the block advance was non-zero, potentially leading to an infinite loop on load (CVE-2021-28676).

An issue was discovered in Pillow before 8.2.0. For EPS data, the readline implementation used in EPSImageFile has to deal with any combination of \r and \n as line endings. It used an accidentally quadratic method of accumulating lines while looking for a line ending. A malicious EPS file could use this to perform a DoS of Pillow in the open phase, before an image was accepted for opening (CVE-2021-28677).

An issue was discovered in Pillow before 8.2.0. For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run a large number of times on empty data (CVE-2021-28678).

Pillow through 8.2.0 and PIL (aka Python Imaging Library) through 1.1.7 allow an attacker to pass controlled parameters directly into a convert function to trigger a buffer overflow in Convert.c (CVE-2021-34552).

An issue was discovered in Pillow before 8.2.0. For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run a large number of times on empty data.

This update for python-Pillow fixes the following issues:

• CVE-2020-35655: Fixed a buffer over-read when decoding crafted SGI RLE image files (bsc#1180832).
• CVE-2021-25293: Fixed an out-of-bounds read in SGIRleDecode.c (bsc#1183102).
• CVE-2021-25290: Fixed a negative-offset memcpy with an invalid size in TiffDecode.c (bsc#1183105).
• CVE-2021-25292: Fixed a backtracking regex in PDF parser could be used as a DOS attack (bsc#1183101).
• CVE-2021-27921,CVE-2021-27922,CVE-2021-27923: Fixed improper reported size of a contained image (bsc#1183110,bsc#1183108,bsc#1183107)
• CVE-2020-35653: Fixed buffer over-read in PcxDecode when decoding a crafted PCX file (bsc#1180834).
• CVE-2021-25287: Fixed out-of-bounds read in J2kDecode in j2ku_graya_la (bsc#1185805).
• CVE-2021-25288: Fixed out-of-bounds read in J2kDecode in j2ku_gray_i (bsc#1185803).
• CVE-2021-28675: Fixed DoS in PsdImagePlugin (bsc#1185804).
• CVE-2021-28678: Fixed improper check in BlpImagePlugin (bsc#1185784).
• CVE-2021-28677: Fixed DoS in the open phase via a malicious EPS file (bsc#1185785).
• CVE-2021-28676: Fixed infinite loop in FliDecode.c (bsc#1185786).

This update for python-Pillow fixes the following issues:

• CVE-2021-25287: out-of-bounds read in J2kDecode in j2ku_graya_la (bsc#1185805)
• CVE-2021-25288: out-of-bounds read in J2kDecode in j2ku_gray_i (bsc#1185803)
• CVE-2021-28675: DoS in PsdImagePlugin (bsc#1185804)
• CVE-2021-28676: infinite loop in FliDecode.c can lead to DoS (bsc#1185786)
• CVE-2021-28677: DoS in the open phase via a malicious EPS file (bsc#1185785)
• CVE-2021-28678: improper check in BlpImagePlugin can lead to DoS (bsc#1185784)

It was discovered that Pillow incorrectly handled certain image files. If a user or automated system were tricked into opening a specially-crafted file, a remote attacker could cause Pillow to crash or hand, resulting in a denial of service.