GdiDrawHoriLineIAlt in Kingsoft WPS Office before 11.2.0.9403 allows remote heap corruption via a crafted PLTE chunk in PNG data within a Word document. This is related to QBrush::setMatrix in gui/painting/qbrush.cpp in Qt 4.x.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25291
Reference (s):
- http://zeifan.my/security/rce/heap/2020/09/03/wps-rce-heap.html