Code Injection in Moodle - CVE-2021-3943
Published: November 16, 2021
Vulnerability identifier: #VU58189
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-3943
CWE-ID: CWE-94
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 improper input validation when restoring malformed backup file . A remote attacker can send a specially crafted request and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Moodle
How to mitigate CVE-2021-3943
Install updates from vendor's website.
Moodle - addressed in versions 3.9.11, 3.10.8, 3.11.4