#VU28541 Permissions, Privileges, and Access Controls in bbPress - CVE-2020-13693

Vulnerability identifier: #VU28541

Vulnerability risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2020-13693

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: JJJ

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions when new user registration is enabled, which leads to security restrictions bypass and privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

bbPress: 2.0 beta-1 - 2.6.4

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External links
https://packetstormsecurity.com/files/157885/WordPress-BBPress-2.5-Privilege-Escalation.html
https://bbpress.org/blog/2020/05/bbpress-2-6-5-is-out/
https://codex.bbpress.org/releases/
https://wordpress.org/plugins/bbpress/#developers
https://wpvulndb.com/vulnerabilities/10242/

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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.