CVE-2020-25699: Moodle/moodle Privilage Escalation Vulnerability
HIGHCVE-2020-25699 is a HIGH (CVSS 7.5) privilage escalation vulnerability (CWE-269: Improper Privilege Management) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves privilage escalation in moodle. Remediation is available by upgrading affected packages to version 3.9.3, 3.8.6, 3.7.9, 3.5.15.
CVE-2020-25699 at a Glance
Security Impact
CVSS: 7.5
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:N/S:U/C:N/I:H/A:N).
How to Fix CVE-2020-25699
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 3.9.3Upgrade moodle/moodle to 3.8.6Upgrade moodle/moodle to 3.7.9Upgrade moodle/moodle to 3.5.15Run 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-2020-25699, 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 3.9.3), 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 CWE-269: Improper Privilege Management, where the product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. 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-2020-25699 Affected Moodle/moodle Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
moodle/moodle
|
Packagist |
≥ 3.9.0
< 3.9.3
|
3.9.3
|
|
moodle/moodle
|
Packagist |
≥ 3.8.0
< 3.8.6
|
3.8.6
|
|
moodle/moodle
|
Packagist |
≥ 3.7.0
< 3.7.9
|
3.7.9
|
|
moodle/moodle
|
Packagist |
≥ 3.5
< 3.5.15
|
3.5.15
|
References
Frequently Asked Questions
What is CVE-2020-25699?
Which Moodle/moodle versions are affected?
What version fixes CVE-2020-25699?
Is moodle/moodle affected?
What is the CVSS score of CVE-2020-25699?
What CWE is associated with CVE-2020-25699?
How can I check Packagist dependencies for CVE-2020-25699?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-h77r-rp97-7rv4",
"modified" : "2021-10-20T17:37:39Z",
"published" : "2021-03-29T20:43:01Z",
"aliases" : [ "CVE-2020-25699" ],
"summary" : "Privilage Escalation in moodle",
"details" : "In moodle, insufficient capability checks could lead to users with the ability to course restore adding additional capabilities to roles within that course. Versions affected: 3.9 to 3.9.2, 3.8 to 3.8.5, 3.7 to 3.7.8, 3.5 to 3.5.14 and earlier unsupported versions. This is fixed in moodle 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.9.0"
}, {
"fixed" : "3.9.3"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.8.0"
}, {
"fixed" : "3.8.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.7.0"
}, {
"fixed" : "3.7.9"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.5"
}, {
"fixed" : "3.5.15"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-25699"
}, {
"type" : "WEB",
"url" : "https://github.com/moodle/moodle/commit/b8e1eec4c77c858de87fedf4e405e929539ea0c5"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1895425"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/moodle/moodle"
}, {
"type" : "WEB",
"url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4NNFCHPPHRJNJROIX6SYMHOC6HMKP3GU"
}, {
"type" : "WEB",
"url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B55KXBVAT45MDASJ3EK6VIGQOYGJ4NH6"
}, {
"type" : "WEB",
"url" : "https://moodle.org/mod/forum/discuss.php?d=413936"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-269", "CWE-863" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2021-03-24T23:15:54Z",
"nvd_published_at" : "2020-11-19T17:15:00Z"
}
}