#VU101811 Resource management error in Moodle - CVE-2024-55648

Vulnerability identifier: #VU101811

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-55648

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Moodle
Web applications / Other software

Vendor: moodle.org

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the application when handling guest sessions. A remote attacker can create multiple guest sessions that have a longer timeout compared to regular user sessions and potentially perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Moodle: 4.0.0 - 4.0.12, 4.1.0 - 4.1.14, 4.2.0 - 4.2.11, 4.3.0 - 4.3.8, 4.4.0 - 4.4.4, 4.5.0

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External links
https://moodle.org/mod/forum/discuss.php?d=464559

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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.