A year of Windows kernel font fuzzing #1: the results

TheRyuu

Diamond Member
Dec 3, 2005
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This is actually older than the Symantec one but was never posted here.
https://googleprojectzero.blogspot.com/2016/06/a-year-of-windows-kernel-font-fuzzing-1_27.html

This post series is about how we used at-scale fuzzing to discover and report a total of 16 vulnerabilities in the handling of TrueType and OpenType fonts in the Windows kernel during the last year. In part #1 here, we present a general overview of the font security area, followed by a high-level explanation of the fuzzing effort we have undertaken, including the overall results and case studies of two bug collisions. In the upcoming part #2, we will share the specific technical details of the project, and how we tried to optimize each part of the process to the maximum extent, and go beyond the current state of the art in Windows kernel font fuzzing. Read on!

HN discussion:
https://news.ycombinator.com/item?id=12005062