Main Vulnerability Database Vulnerabilities #VU14500

Use-after-free in WebKitGTK+ - CVE-2018-12294

Published: August 22, 2018 / Updated: August 23, 2018

Vulnerability identifier: #VU14500

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-12294

CWE-ID: CWE-416

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists in WebCore/platform/graphics/texmap/TextureMapperLayer.cpp due to use-after-free error when handling malicious input. A remote unauthenticated attacker can trick the victim into opening a specially crafted WebCore::TextureMapperLayer object, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

WebKitGTK+
Gentoo Linux

How to mitigate CVE-2018-12294

Update to version 2.20.2.

WebKitGTK+ - update to 2.20.2

External References

https://bugs.webkit.org/show_bug.cgi?id=184729

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