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Microsoft Windows 'LoadUvsTable()' Heap-based Buffer Overflow# Date: 15-03-2017
# Author: Hossein Lotfi (
# CVE: CVE-2016-7274
1. Description
An integer overflow error within the "LoadUvsTable()" function of usp10.dll
can be exploited to cause a heap-based buffer overflow. Full analysis is
available at:
2. Proof of Concept
open C:\Windows\Fonts\phagspa.ttf in a hex editor and change the value at
offset 0x2051 from 0x00000006 to 0x33333334.
3. Solution:
Microsoft initially tried to fixed the issue in MS16-147, but the fix was
incomplete and the issue remained unpatched til Microsoft March 2017 patch
It appears MS17-013 finally fixed the vulnerability properly:


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