SB2024091317 - Multiple vulnerabilities in Moodle

Description

This security bulletin contains information about 3 vulnerabilities.

1) Improper Authentication (CVE-ID: CVE-2024-45691)

CWE-ID: CWE-287 - Improper Authentication

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

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error when handling "magic hash" passwords. When restricting access to a Lesson activity with a password, certain passwords could be bypassed/less secure due to a loose comparison in the password checking logic.

2) Improper access control (CVE-ID: CVE-2024-45690)

CWE-ID: CWE-284 - Improper Access Control

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

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

The vulnerability exists due to improper access restrictions when deleting OAuth2 linked accounts. A remote user can bypass implemented security restrictions and delete OAuth2 linked accounts of other users.

3) Improper access control (CVE-ID: CVE-2024-45689)

CWE-ID: CWE-284 - Improper Access Control

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

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

The vulnerability exists due to improper access restrictions in dynamic tables implementation. A remote user can bypass implemented security restrictions and access otherwise restricted information.

Remediation

Install update from vendor's website.

References

• https://moodle.org/mod/forum/discuss.php?d=461897
• https://moodle.org/mod/forum/discuss.php?d=461895
• https://moodle.org/mod/forum/discuss.php?d=461894