Vulnerability identifier: #VU47432

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
HyperComments
Web applications / Modules and components for CMS

Vendor: Alexandr Bazyk

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to the affected plugin does not validate and sanitise user input which is being concatenated to create a file path, passed to unlink(). A remote attacker can bypass implemented security restrictions and cause arbitrary file deletion.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

HyperComments: 1.0.0 - 1.2.1

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External links
http://wpvulndb.com/vulnerabilities/10423/
http://lenonleite.com.br/en/2018/01/08/13-17-wordpress-plugins-with-over-150000-270000-active-downloads-with-the-same-security-issues/

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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.