CVE-2021-40691: Moodle/moodle Moodle Improper Authentication Vulnerability
MODERATECVE-2021-40691 is a MODERATE (CVSS 4.3) moodle improper authentication vulnerability (General Security Weakness) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle improper authentication. Remediation is available by upgrading affected packages to version 3.9.10, 3.10.7, 3.11.3.
CVE-2021-40691 at a Glance
Security Impact
CVSS: 4.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N).
How to Fix CVE-2021-40691
To remediate this vulnerability, upgrade all affected Moodle/moodle dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade moodle/moodle to 3.9.10Upgrade moodle/moodle to 3.10.7Upgrade moodle/moodle to 3.11.3Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for moodle/moodleHow to Check if You Are Affected
To determine whether your application is affected by CVE-2021-40691, inspect your project dependencies for Moodle/moodle:
inspect dependencies for moodle/moodleAnalyze the terminal output to locate any version of Moodle/moodle in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.9.10), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under General Security Weakness. In Moodle/moodle, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2021-40691 Affected Moodle/moodle Versions
3 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
moodle/moodle
|
Packagist |
≥ 3.9
< 3.9.10
|
3.9.10
|
|
moodle/moodle
|
Packagist |
≥ 3.10
< 3.10.7
|
3.10.7
|
|
moodle/moodle
|
Packagist |
≥ 3.11
< 3.11.3
|
3.11.3
|
References
Frequently Asked Questions
What is CVE-2021-40691?
Which Moodle/moodle versions are affected?
What version fixes CVE-2021-40691?
Is moodle/moodle affected?
What is the CVSS score of CVE-2021-40691?
What CWE is associated with CVE-2021-40691?
How can I check Packagist dependencies for CVE-2021-40691?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-92vh-mr2w-j2cr",
"modified" : "2024-04-23T23:35:55Z",
"published" : "2022-09-30T00:00:30Z",
"aliases" : [ "CVE-2021-40691" ],
"summary" : "Moodle Improper Authentication",
"details" : "A session hijack risk was identified in the Shibboleth authentication plugin.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.9"
}, {
"fixed" : "3.9.10"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.10"
}, {
"fixed" : "3.10.7"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.11"
}, {
"fixed" : "3.11.3"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-40691"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2043411"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/moodle/moodle"
} ],
"database_specific" : {
"cwe_ids" : [ ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2024-04-23T23:35:55Z",
"nvd_published_at" : "2022-09-29T03:15:00Z"
}
}