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Fencer Intel
critical 9.8

CVE-2019-8375 in the critical feed json

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…

published 7y ago modified 4mo ago also EUVD-2019-17765

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
15.7%
EPSS 15.7% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

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).

Patch / fix

  • webkit2gtk Debian 14, Debian 13, Debian 12 2.24.1-1

debian advisories DEBIAN-CVE-2019-8375

  • webkit2gtk Ubuntu 18.04 LTS 2.24.1-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2019-8375

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • webkit2gtk3 SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4 +7 more 2.24.0-2.38.2
  • webkit2gtk3 SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 2.24.0-3.21.1

suse advisories SUSE-SU-2019:1030-1SUSE-SU-2019:0890-1

  • gtk3 openSUSE Tumbleweed 2.32.4-1.1
  • webkit2gtk3 openSUSE Leap 15.0 2.24.0-lp150.2.16.1

opensuse advisories openSUSE-SU-2024:11506-1openSUSE-SU-2019:1206-1

Is CVE-2019-8375 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Timeline

  1. Published
  2. First public exploit (EDB-46465)

Exploit prediction

15.70% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-46465 WebKitGTK 2.23.90 / WebKitGTK+ 2.22.6 - Denial of Service dos, 2019-02-28
  • inputzero.io https://www.inputzero.io/2019/02/fuzzing-webkit.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.