Vulnerability identifier: #VU14501

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11713

CWE-ID: CWE-264

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 bypass security restrictions on the target system.

The vulnerability exists in WebCore/platform/network/soup/SocketStreamHandleImplSoup.cpp in the libsoup network backend of WebKit due to a failure to use system proxy settings for WebSocket connections. A remote attacker can cause the victim to be deanonymized by crafted web sites via a WebSocket connection.

Mitigation
Update to version 2.20.0.

Vulnerable software versions

WebKitGTK+: 2.15.3 - 2.19.92

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External links
http://bugs.webkit.org/show_bug.cgi?id=126384

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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.