Improper access control in WordPress WordPress

1) Improper access control

EUVDB-ID: #VU9456

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-17092

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to upload JavaScript files.

The vulnerability exists due to incorrectly implemented access restrictions in wp-includes/functions.php script, which allowed uploading of JavaScript files for users without unfiltered_html permissions. A remote authenticated attacker can upload malicious JavaScript file and perform XSS or spoofing attacks against website users.

Mitigation

Update to version 4.9.1.

Vulnerable software versions

WordPress: 3.7 - 4.9

CPE2.3

• cpe:2.3:a:wordpress_org:wordpress:3.7:*:*:*:*:*:*:*
• cpe:2.3:a:wordpress_org:wordpress:3.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:wordpress_org:wordpress:3.7.2:*:*:*:*:*:*:*
• cpe:2.3:a:wordpress_org:wordpress:3.7.3:*:*:*:*:*:*:*
• cpe:2.3:a:wordpress_org:wordpress:3.7.4:*:*:*:*:*:*:*
• cpe:2.3:a:wordpress_org:wordpress:3.7.5:*:*:*:*:*:*:*
• cpe:2.3:a:wordpress_org:wordpress:3.7.6:*:*:*:*:*:*:*
• cpe:2.3:a:wordpress_org:wordpress:3.7.7:*:*:*:*:*:*:*
• cpe:2.3:a:wordpress_org:wordpress:3.7.8:*:*:*:*:*:*:*
• cpe:2.3:a:wordpress_org:wordpress:3.7.9:*:*:*:*:*:*:*

External links

https://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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