Home/CVE/The UIProcess subsystem in WebKit, as used in WebKitGTK through 2.23.90 and WebKitGTK+ through 2.22.6 and other products
CVE

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

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).

CRITICAL · CVSS 9.8 EPSS 0.15983
Act now
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 5% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

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

Affected Products & Versions

4
webkitgtk<= 2.23.90
webkitgtk webkitgtk\+<= 2.22.6
opensuse leapall versions
canonical ubuntu linuxall versions
⚠

Public Exploits & PoCs

3
dosWebKitGTK 2.23.90 / WebKitGTK+ 2.22.6 - Denial of Service2019-02-28
pocwww.exploit-db.com · 46465www.exploit-db.com
pocwww.inputzero.io · fuzzing-webkit.htmlwww.inputzero.io
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD24 Feb 2019 · 01:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

5
suse-csafopenSUSE-SU-2024:11506-1
suse-csafSUSE-SU-2019:1030-1
usnUSN-3948-1
suse-csafopenSUSE-SU-2019:1206-1
suse-csafSUSE-SU-2019:0890-1
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00005.htmlMailing ListThird Party Advisory
https://bugs.webkit.org/show_bug.cgi?id=184875Issue TrackingPermissions RequiredThird Party Advisory
https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531PatchThird Party Advisory
https://trac.webkit.org/changeset/241515/webkitPatchVendor Advisory
https://usn.ubuntu.com/3948-1/Third Party Advisory
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