Vulnerability identifier: #VU31117

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11070

CWE-ID: CWE-19

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 non-authenticated attacker to manipulate data.

WebKitGTK and WPE WebKit prior to version 2.24.1 failed to properly apply configured HTTP proxy settings when downloading livestream video (HLS, DASH, or Smooth Streaming), an error resulting in deanonymization. This issue was corrected by changing the way livestreams are downloaded.

Mitigation
Install update from vendor's website.

Vulnerable software versions

WebKitGTK+: 2.24.0

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External links
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00031.html
http://packetstormsecurity.com/files/152485/WebKitGTK-WPE-WebKit-URI-Spoofing-Code-Execution.html
http://www.openwall.com/lists/oss-security/2019/04/11/1
http://bugs.webkit.org/show_bug.cgi?id=193718
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YO5ZBUWOOXMVZPBYLZRDZF6ZQGBYJERQ/
http://seclists.org/bugtraq/2019/Apr/21
http://security.gentoo.org/glsa/201909-05
http://trac.webkit.org/changeset/243197/webkit
http://usn.ubuntu.com/3948-1/

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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.