CVE-2019-3850: Moodle/moodle Moodle Stored HTML Vulnerability
MODERATECVE-2019-3850 is a MODERATE (CVSS 6.1) moodle stored html vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle stored html in assignment submission comments allowed links to be opened directly. Remediation is available by upgrading affected packages to version 3.1.17, 3.4.8, 3.5.5, 3.6.3.
CVE-2019-3850 at a Glance
Security Impact
CVSS: 6.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
How to Fix CVE-2019-3850
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 3.1.17Upgrade moodle/moodle to 3.4.8Upgrade moodle/moodle to 3.5.5Upgrade moodle/moodle to 3.6.3Run 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-2019-3850, 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 3.1.17), 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-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. 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-2019-3850 Affected Moodle/moodle Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
moodle/moodle
|
Packagist |
< 3.1.17
|
3.1.17
|
|
moodle/moodle
|
Packagist |
≥ 3.2.0
< 3.4.8
|
3.4.8
|
|
moodle/moodle
|
Packagist |
≥ 3.5.0
< 3.5.5
|
3.5.5
|
|
moodle/moodle
|
Packagist |
≥ 3.6.0
< 3.6.3
|
3.6.3
|
References
Frequently Asked Questions
What is CVE-2019-3850?
Which Moodle/moodle versions are affected?
What version fixes CVE-2019-3850?
Is moodle/moodle affected?
What is the CVSS score of CVE-2019-3850?
What CWE is associated with CVE-2019-3850?
How can I check Packagist dependencies for CVE-2019-3850?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-3fj7-9j8m-7r8g",
"modified" : "2024-01-26T18:27:22Z",
"published" : "2022-05-13T01:31:16Z",
"aliases" : [ "CVE-2019-3850" ],
"summary" : "Moodle Stored HTML in assignment submission comments allowed links to be opened directly",
"details" : "A vulnerability was found in moodle before versions 3.6.3, 3.5.5, 3.4.8 and 3.1.17. Links within assignment submission comments would open directly (in the same window). Although links themselves may be valid, opening within the same window and without the no-referrer header policy made them more susceptible to exploits.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "3.1.17"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.2.0"
}, {
"fixed" : "3.4.8"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.5.0"
}, {
"fixed" : "3.5.5"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.6.0"
}, {
"fixed" : "3.6.3"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-3850"
}, {
"type" : "WEB",
"url" : "https://github.com/moodle/moodle/commit/1fc481dd7b09e08e85824c1fe6733b303a36bdce"
}, {
"type" : "WEB",
"url" : "https://github.com/moodle/moodle/commit/772c908d40a944efd91d897d524b255626d330d4"
}, {
"type" : "WEB",
"url" : "https://github.com/moodle/moodle/commit/907b377e51c32ea37feef53e10684b504e103273"
}, {
"type" : "WEB",
"url" : "https://github.com/moodle/moodle/commit/d3f2f990dd3c5d4e6073a77154c6423d1c304647"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3850"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/moodle/moodle"
}, {
"type" : "WEB",
"url" : "https://moodle.org/mod/forum/discuss.php?d=384013#p1547745"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-601" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2024-01-26T18:27:22Z",
"nvd_published_at" : "2019-03-26T18:29:00Z"
}
}