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Moodle blind Server-Side Request Forgery (SSRF) vulnerability in LTI provider library

Critical severity GitHub Reviewed Published Nov 25, 2022 to the GitHub Advisory Database • Updated Apr 23, 2024

Package

composer moodle/moodle (Composer)

Affected versions

>= 3.9, < 3.9.18
>= 3.11, < 3.11.11
>= 4.0, < 4.0.5

Patched versions

3.9.18
3.11.11
4.0.5

Description

A blind Server-Side Request Forgery (SSRF) vulnerability was found in Moodle. This flaw exists due to insufficient validation of user-supplied input in LTI provider library. The library does not utilise Moodle's inbuilt cURL helper, which resulted in a blind SSRF risk. An attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems. This vulnerability allows a remote attacker to perform SSRF attacks.

References

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

Severity

Critical

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
High
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:H/A:N

EPSS score

0.300%
(70th percentile)

Weaknesses

CVE ID

CVE-2022-45152

GHSA ID

GHSA-xqcf-vgqc-pcmg

Source code

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