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Moodle Arbitrary file read when importing lesson questions

High severity GitHub Reviewed Published Jul 26, 2022 to the GitHub Advisory Database • Updated Apr 23, 2024

Package

composer moodle/moodle (Composer)

Affected versions

>= 3.9, < 3.9.15
>= 3.11, < 3.11.8
>= 4.0, < 4.0.2

Patched versions

3.9.15
3.11.8
4.0.2

Description

The vulnerability was found in Moodle, occurs due to input validation error when importing lesson questions. This insufficient path checks results in arbitrary file read risk. This vulnerability allows a remote attacker to perform directory traversal attacks. The capability to access this feature is only available to teachers, managers and admins by default.

References

Published by the National Vulnerability Database Jul 25, 2022
Published to the GitHub Advisory Database Jul 26, 2022
Reviewed Apr 23, 2024
Last updated Apr 23, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS score

0.293%
(70th percentile)

Weaknesses

CVE ID

CVE-2022-35650

GHSA ID

GHSA-pgm5-cr62-prxq

Source code

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