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Bug 903664 - <dev-python/pillow-9.5.0: two security issues
Summary: <dev-python/pillow-9.5.0: two security issues
Alias: None
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Security
Whiteboard: A3 [glsa]
Depends on: 903663
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Reported: 2023-04-01 16:11 UTC by Michał Górny
Modified: 2024-04-05 06:33 UTC (History)
1 user (show)

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Package list:
Runtime testing required: ---


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Description Michał Górny archtester Gentoo Infrastructure gentoo-dev Security 2023-04-01 16:11:19 UTC
From release notes:

Clear PPM half token after use
Image files that are small on disk are often prevented from expanding to be big images consuming a large amount of resources simply because they lack the data to populate those resources.

PpmImagePlugin might hold onto the last data read for a pixel value in case the pixel value has not been finished yet. However, that data was not being cleared afterwards, meaning that infinite data could be available to fill any image size. This has been present since Pillow 9.2.0.

That data is now cleared after use.

Saving TIFF tag ImageSourceData
If Pillow incorrectly saved the TIFF tag ImageSourceData as ASCII instead of UNDEFINED, a segmentation fault was triggered.

The correct tag type will now be used by default instead.