#VU50652 Improper Enforcement of Behavioral Workflow in cPanel - CVE-2021-26267

Vulnerability identifier: #VU50652

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-26267

CWE-ID: CWE-841

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
cPanel
Web applications / Remote management & hosting panels

Vendor: cPanel, Inc

Description

The vulnerability allows a remote attacker to ignore imposed restrictions.

The vulnerability exists due to an error when handling suspensions for MySQL users with old-style password hashes on a MySQL 5.5 system. The suspendacct fails to disable the passwords and the user still has access to the database.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

cPanel: 11.86.0.1 - 11.92.0.8

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External links
https://news.cpanel.com/cpanel-tsr-2021-0001-full-disclosure/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.