#VU63336 Improper Restriction of Excessive Authentication Attempts in Moodle - CVE-2022-30600

Vulnerability identifier: #VU63336

Vulnerability risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2022-30600

CWE-ID: CWE-307

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Moodle
Web applications / Other software

Vendor: moodle.org

Description

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

The vulnerability exists due to issue in the logic used to count failed login attempts. A remote attacker can bypass the account lockout threshold.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Moodle: 3.9.0 - 3.9.13, 3.10.0 - 3.11.6, 4.0.0

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External links
https://moodle.org/mod/forum/discuss.php?d=434582

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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.