Deserialization of Untrusted Data in Moodle - CVE-2022-40314
Published: September 19, 2022
Vulnerability identifier: #VU67469
CSH Severity: Medium
CVSS v4: 7.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-40314
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when restoring backup files originating from Moodle. A remote attacker can trick the victim into restoring the website from a malformed backup and execute arbitrary code on the target system.
Affected software
Moodle
How to mitigate CVE-2022-40314
Install updates from vendor's website.
Moodle - addressed in versions 3.9.17, 3.11.10, 4.0.4