The png_decompress_chunk function in pngrutil.c in libpng...
Moderate severity
Unreviewed
Published
May 2, 2022
to the GitHub Advisory Database
•
Updated Jan 31, 2023
Description
Published by the National Vulnerability Database
Mar 3, 2010
Published to the GitHub Advisory Database
May 2, 2022
Last updated
Jan 31, 2023
The png_decompress_chunk function in pngrutil.c in libpng 1.0.x before 1.0.53, 1.2.x before 1.2.43, and 1.4.x before 1.4.1 does not properly handle compressed ancillary-chunk data that has a disproportionately large uncompressed representation, which allows remote attackers to cause a denial of service (memory and CPU consumption, and application hang) via a crafted PNG file, as demonstrated by use of the deflate compression method on data composed of many occurrences of the same character, related to a "decompression bomb" attack.
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