CVE-2019-8375

critical

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).

References

https://www.inputzero.io/2019/02/fuzzing-webkit.html

https://www.exploit-db.com/exploits/46465/

https://usn.ubuntu.com/3948-1/

https://trac.webkit.org/changeset/241515/webkit

https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531

https://bugs.webkit.org/show_bug.cgi?id=184875

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00005.html

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.html

Details

Source: Mitre, NVD

Published: 2019-02-24

Updated: 2019-05-09

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical