Moodle update for phpCAS

1) Improper access control

EUVDB-ID: #VU72486

Risk: Medium

CVSSv4.0: 5.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-39369

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

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

The vulnerability exists due to improper access restrictions within the phpCAS library that is maintained by a third-party. A remote user can bypass implemented security restrictions and gain unauthorized access to the application.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Moodle: 3.0 - 4.0.9

CPE2.3

• cpe:2.3:a:moodle_org:moodle:3.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.11.15:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.2.9:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.3.9:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.4.9:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.5.18:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.6.10:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.7.9:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.8.9:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.9.22:*:*:*:*:*:*:*

External links

https://moodle.org/mod/forum/discuss.php?d=449646

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.