Remote code execution in WordPress

1) Input validation error

EUVDB-ID: #VU84032

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted requests to the website and execute arbitrary code on the system.

According to the vendor, the vulnerability is not directly exploitable in core, however it can be used against installations with plugins and especially against multisite installations.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WordPress: 6.4 - 6.4.1

External links

http://wordpress.org/documentation/wordpress-version/version-6-4-2/

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.