Information disclosure in WordPress WordPress

1) Information disclosure

EUVDB-ID: #VU4856

Risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2017-5487

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to incorrectly implemented restrictions within REST API ("wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php") when accessing listings of post authors via HTTP request to "wp-json/wp/v2/users" URL. A remote attacker can send a specially crafted HTTP request to vulnerable URL and obtain potentially sensitive data.

Successful exploitation of the vulnerability may allow an attacker to gain access to otherwise restricted sensitive information.

Mitigation

Update to version 4.7.1.

Vulnerable software versions

WordPress: 4.7

CPE2.3

• cpe:2.3:a:wordpress_org:wordpress:4.7:*:*:*:*:*:*:*

External links

https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/

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. However, proof of concept for this vulnerability is available.