#VU5937 Cross-site request forgery in WordPress - CVE-2017-6819

Vulnerability identifier: #VU5937

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-6819

CWE-ID: CWE-352

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WordPress
Web applications / CMS

Vendor: WordPress.ORG

Description

The disclosed vulnerability allows a remote attacker to perform CSRF attacks.

The vulnerability is caused by incorrect validation of the request origin within "Press This" functionality (wp-admin/includes/class-wp-press-this.php). A remote attacker can create a specially crafted web page, trick the authenticated WordPress user into visiting and trigger the web application to consume excessive server resources.

Successful exploitation of this vulnerability may allow a remote attacker to perform a denial of service (DoS) attack.

Mitigation
Update to version 4.7.3.

Vulnerable software versions

WordPress: 4.7 - 4.7.2

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External links
https://wordpress.org/news/2017/03/wordpress-4-7-3-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.