Vulnerability identifier: #VU14500

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-12294

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WebKitGTK+
Server applications / Frameworks for developing and running applications

Vendor: WebKitGTK

Description

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.

Mitigation
Update to version 2.20.2.

Vulnerable software versions

WebKitGTK+: 2.15.3 - 2.20.1

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External links
http://bugs.webkit.org/show_bug.cgi?id=184729

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.