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Security advisory: Loading invalid QML image source impacts Qt

Oct 19, 2023

by Andy Shaw
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An issue when loading an invalid QML image source has been reported and has been assigned the CVE id CVE-2023-45872.

When an invalid source is used to indicate an image to be loaded is specified then it will end up trying to load it as a SVG file which will trigger a crash in Qt SVG. This does not affect Qt 5.15.x or Qt 6.5.3

Solution: As a workaround, validate that the image source urls are valid beforehand. Or apply the following patch or update to Qt 6.2.11, Qt 6.6.1.

Patches:

dev: https://codereview.qt-project.org/c/qt/qtsvg/+/510674
6.6: https://codereview.qt-project.org/c/qt/qtsvg/+/510692 or https://download.qt.io/official_releases/qt/6.6/CVE-2023-45872-qtsvg-6.6.0.diff
6.2: https://download.qt.io/official_releases/qt/6.2/CVE-2023-45872-qtsvg-6.2.10.diff

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