Vulnerability identifier: #VU18955

Vulnerability risk: Low

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L/E:P/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-352

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Block wp-login
Web applications / Modules and components for CMS

Vendor: webd.uk

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin and lack of authorisation checks in the "bwpl_configure_slug()" function registered as an "admin_init" action. A remote attacker can change the plugin settings at "/wp-admin/options-permalink.php" and disable the protection.

This vulnerability leads to unauthorized option update via CSRF or unauthenticated usage of the "admin-ajax.php".

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Block wp-login: 1.1.3 - 1.3.0

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External links
http://plugins.trac.wordpress.org/changeset?reponame=&new=2113620%40block-wp-login&...

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