Rody Kersten created IMAGING-203:
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Summary: JPEG segment size not validated
Key: IMAGING-203
URL: https://issues.apache.org/jira/browse/IMAGING-203
Project: Commons Imaging
Issue Type: Bug
Components: Format: JPEG
Reporter: Rody Kersten
Using my AFL-based fuzzer for Java, Kelinci (https://github.com/isstac/kelinci)
I found that a NegativeArraySizeException may be throw when attempting to read
an invalid JPEG image.
Each JPEG segment starts with a two-byte unsigned integer specifying the
segment size. Segments are parsed by
org.apache.commons.imaging.formats.jpeg.JpegUtils.traverseJFIF(). As the
specified size includes these two bytes, the method subtracts 2 from the size
before it is used. It then attempts to allocate a buffer for the segment, which
fails if the specified size is 0 or 1. The method should throw an
ImageReadException instead.
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