CVE-2019-8375

Name: CVE-2019-8375
Creator: NVD / NIST
Published: 2019-02-24T13:29:00.357+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 16.11%

Last modified Jun 17, 2026

CVE-2019-8375 is a vulnerability of currently unknown severity. 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).. EPSS estimates a 16.11% chance of exploitation in the next 30 days.

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).

Metrics

EPSS Probability

16.11%

96.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Webkitgtk	Webkitgtk	<= 2.23.90
Webkitgtk	Webkitgtk\+	<= 2.22.6
Opensuse	Leap	15.0
Opensuse	Leap	42.3
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00005.htmlMailing List, Third Party Advisory
https://bugs.webkit.org/show_bug.cgi?id=184875Issue Tracking, Permissions Required, Third Party Advisory
https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531Patch, Third Party Advisory
https://trac.webkit.org/changeset/241515/webkitPatch, Vendor Advisory
https://usn.ubuntu.com/3948-1/Third Party Advisory
https://www.exploit-db.com/exploits/46465/Exploit, Third Party Advisory, VDB Entry
https://www.inputzero.io/2019/02/fuzzing-webkit.htmlExploit, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00005.htmlMailing List, Third Party Advisory
https://bugs.webkit.org/show_bug.cgi?id=184875Issue Tracking, Permissions Required, Third Party Advisory
https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531Patch, Third Party Advisory
https://trac.webkit.org/changeset/241515/webkitPatch, Vendor Advisory
https://usn.ubuntu.com/3948-1/Third Party Advisory
https://www.exploit-db.com/exploits/46465/Exploit, Third Party Advisory, VDB Entry
https://www.inputzero.io/2019/02/fuzzing-webkit.htmlExploit, Third Party Advisory

Timeline

Published: Feb 24, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-8375?

How severe is CVE-2019-8375?

Severity scoring for CVE-2019-8375 is pending analysis. The EPSS model estimates a 16.11% probability of exploitation in the next 30 days.

How do I fix CVE-2019-8375?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-8375?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST