Improper access control in WordPress WordPress

1) Improper access control

EUVDB-ID: #VU9456

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

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

External links

http://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.