CVE-2019-8375 Information

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).

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.html http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00005.html https://bugs.webkit.org/show_bug.cgi?id=184875 https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531 https://trac.webkit.org/changeset/241515/webkit https://usn.ubuntu.com/3948-1/ https://www.exploit-db.com/exploits/46465/ https://www.inputzero.io/2019/02/fuzzing-webkit.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8