Main Vulnerability Database Vulnerabilities #VU14308

Improper input validation in WebKitGTK+ - CVE-2018-11646

Published: August 10, 2018 / Updated: June 17, 2021

Vulnerability identifier: #VU14308

CSH Severity: Low

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-11646

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to mishandling of an unset pageURL in webkitFaviconDatabaseSetIconForPageURL and webkitFaviconDatabaseSetIconURLForPageURL in UIProcess/API/glib/WebKitFaviconDatabase.cpp. A remote attacker can send specially crafted input and cause the service to crash.

Affected software

WebKitGTK+
Gentoo Linux
Opensuse
Fedora
webkitgtk4
webkit2gtk3

How to mitigate CVE-2018-11646

Update to version 2.21.4 or later.

WebKitGTK+ - update to 2.21.4
webkitgtk4 - update to 2.20.3-1.fc27
webkit2gtk3 - update to 2.20.3-1.fc28

Links to Public Exploits and PoC-codes

External References

https://bugs.webkit.org/show_bug.cgi?id=186164