CVE-2019-8375

Name	CVE-2019-8375
Description	The UIProcess subsystem in WebKit, as used in WebKitGTK through 2.23.90 and WebKitGTK+ through 2.22.6 and other products, does not prevent the script dialog size from exceeding the web view size, which allows remote attackers to cause a denial of service (Buffer Overflow) or possibly have unspecified other impact, related to UIProcess/API/gtk/WebKitScriptDialogGtk.cpp, UIProcess/API/gtk/WebKitScriptDialogImpl.cpp, and UIProcess/API/gtk/WebKitWebViewGtk.cpp, as demonstrated by GNOME Web (aka Epiphany).
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
webkit2gtk (PTS)	buster	2.36.4-1~deb10u1	fixed
	buster (security)	2.38.6-0+deb10u1	fixed
	bullseye	2.38.5-1~deb11u1	fixed
	bullseye (security)	2.40.1-1~deb11u1	fixed
	bookworm	2.40.1-1	fixed
	sid	2.40.2-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
webkit2gtk	source	(unstable)	2.24.1-1	unimportant

Notes

https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531
https://trac.webkit.org/changeset/241515/webkit
https://www.inputzero.io/2019/02/fuzzing-webkit.html
Not covered by security support