CVE Vulnerabilities

CVE-2021-20184

Improper Validation of Integrity Check Value

Published: Jan 28, 2021 | Modified: Feb 01, 2021
CVSS 3.x
4.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:P/I:N/A:N
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

It was found in Moodle before version 3.10.1, 3.9.4 and 3.8.7 that a insufficient capability checks in some grade related web services meant students were able to view other students grades.

Weakness

The product does not validate or incorrectly validates the integrity check values or “checksums” of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.

Affected Software

Name Vendor Start Version End Version
Moodle Moodle * 3.8.7 (excluding)
Moodle Moodle 3.9.0 (including) 3.9.4 (excluding)
Moodle Moodle 3.10.0 (including) 3.10.1 (excluding)
Moodle Ubuntu bionic *
Moodle Ubuntu esm-apps/bionic *
Moodle Ubuntu esm-apps/xenial *
Moodle Ubuntu trusty *
Moodle Ubuntu upstream *
Moodle Ubuntu xenial *

Potential Mitigations

References