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QT TIFF Processing Heap Overflow

QT TIFF Processing Heap Overflow
Posted Jun 4, 2021
Authored by Google Security Research, natashenka

There is a heap corruption bug that can occur when QT processes a malformed TIFF image. It happens because the size of the QImageData backing the image is calculated is calculated using the format of the image, meanwhile TIFFReadScanline calculates the length to be read based on TIFFScanlineSize, which determines the size base on three tags in the TIFF file, width, samples per pixel and bits per sample.

tags | exploit
SHA-256 | 765990ea3bd9f2c14232bcfa3535efba165c1990d1e7949df33a649783e33d0b
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