CVE-2019-8375

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 v3.0 NVD

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

CVSS v2.0 NVD

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

15.70% chance of exploitation in the next 30 days, 97th percentile

Published

2019-02-24

Updated

2024-08-04

Proof-of-concept exploits (1)

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

ExploitDB entries (1)

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

Security advisories

• https://trac.webkit.org/changeset/241515/webkit
• 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
• WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531
• https://usn.ubuntu.com/3948-1

References

• CVE Record
• NVD entry