webkitFaviconDatabaseSetIconForPageURL and webkitFaviconDatabaseSetIconURLForPageURL in UIProcess/API/glib/WebKitFaviconDatabase.cpp in Web…

published 2018-06-01 8y ago modified 2026-06-17 4mo ago also EUVD-2018-3669

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 68.0%; EPSS 68.0% chance of exploitation in 30 days, percentile 99.3%
public exploits: 3; Metasploit and Exploit-DB

webkitFaviconDatabaseSetIconForPageURL and webkitFaviconDatabaseSetIconURLForPageURL in UIProcess/API/glib/WebKitFaviconDatabase.cpp in WebKit, as used in WebKitGTK+ through 2.21.3, mishandle an unset pageURL, leading to an application crash.

Patch / fix

distros 4 links 1

debian ubuntu suse opensuse

webkit2gtk Debian 14, Debian 13, Debian 12 2.20.3-1

debian advisories DEBIAN-CVE-2018-11646

webkit2gtk Ubuntu 16.04 LTS 2.20.1-0ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2018-11646

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 SP3, SLES 12 SP3, SLED 12 SP3 +2 more 2.20.3-2.23.8
webkit2gtk3 SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 2.20.3-3.3.1

suse advisories SUSE-SU-2018:3387-1 SUSE-SU-2018:2075-1

gtk3 openSUSE Tumbleweed 2.32.4-1.1

opensuse advisories openSUSE-SU-2024:11506-1

bugs.webkit.org/show_bug.cgi?id=186164 advisory

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Timeline

2018-06-01 Published
2018-06-03 First public exploit (Metasploit auxiliary/dos/http/webkitplus)

Exploit prediction

68.02% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

Metasploit auxiliary/dos/http/webkitplus WebKitGTK+ WebKitFaviconDatabase DoS metasploit auxiliary, normal rank, 2018-06-03
EDB-44876 WebKitGTK+ < 2.21.3 - 'WebKitFaviconDatabase' Denial of Service (Metasploit) dos, 2018-06-11
EDB-44842 WebKitGTK+ < 2.21.3 - Crash (PoC) local, 2018-06-05
bugzilla.gnome.org https://bugzilla.gnome.org/show_bug.cgi?id=795740 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

References

bugs.webkit.org /show_bug.cgi?id=186164
issue-tracking, patch, vendor-advisory
exploit-db.com /exploits/44876/
exploit, third-party-advisory, vdb-entry
exploit-db.com /exploits/44842/
exploit, third-party-advisory, vdb-entry
bugzilla.gnome.org /show_bug.cgi?id=795740
exploit, issue-tracking, third-party-advisory
security.gentoo.org /glsa/201808-04
vendor-advisory, third-party-advisory

Sources

CVE List CVE-2018-11646
NVD CVE-2018-11646

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.