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gnu: ruby-chunky-png: Add warning about untrusted input.

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* gnu/packages/ruby.scm (ruby-chunky-png)[description]: Warn of decompression bombs.
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Tobias Geerinckx-Rice 2020-11-09 22:41:57 +01:00
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@ -1638,7 +1638,12 @@ pixel, depending on the hardware).
Performance: ChunkyPNG is reasonably fast for Ruby standards, by only using
integer math and a highly optimized saving routine.
@item Interoperability with RMagick.
@end itemize")
@end itemize
ChunkyPNG is vulnerable to decompression bombs and can run out of memory when
loading a specifically crafted PNG file. This is hard to fix in pure Ruby.
Deal with untrusted images in a separate process, e.g., by using @code{fork}
or a background processing library.")
(home-page "https://github.com/wvanbergen/chunky_png/wiki")
(license license:expat)))