Vulnerability identifier: #VU8513

Vulnerability risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-14722

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WordPress
Web applications / CMS

Vendor: WordPress.ORG

Description

The vulnerability allows a remote attacker to read arbitrary files on the system.

The vulnerability exists due to insufficient sanitization of user-supplied data in the customizer. A remote attacker can send a specially crafted HTTP request containing directory traversal sequences and view contest of arbitrary file on vulnerable system.

Mitigation
Update to version 4.8.2.

Vulnerable software versions

WordPress: 4.8 - 4.8.1

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External links
http://wordpress.org/news/2017/09/wordpress-4-8-2-security-and-maintenance-release/

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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.