Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1xNnZ3LTI3YzYtanY5Y84AArJl

Moodle Persistent Cross-site Scripting (XSS)

Persistent XSS in /course/modedit.php of Moodle through 3.7.2 allows authenticated users (Teacher and above) to inject JavaScript into the session of another user (e.g., enrolled student or site administrator) via the introeditor[text] parameter. NOTE: the discoverer and vendor disagree on whether Moodle customers have a reasonable expectation that anyone authenticated as a Teacher can be trusted with the ability to add arbitrary JavaScript (this ability is not documented on Moodle's Teacher_role page). Because the vendor has this expectation, they have stated "this report has been closed as a false positive, and not a bug."

Permalink: https://github.com/advisories/GHSA-q6vw-27c6-jv9c
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1xNnZ3LTI3YzYtanY5Y84AArJl
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: almost 2 years ago
Updated: 15 days ago

CVSS Score: 5.4
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Identifiers: GHSA-q6vw-27c6-jv9c, CVE-2019-18210
References:

• https://nvd.nist.gov/vuln/detail/CVE-2019-18210
• https://docs.moodle.org/38/en/Teacher_role
• https://gist.github.com/Danbardo/4a6b0fe8cb21ec6d7c54e6ac951bdb0a
• https://github.com/advisories/GHSA-q6vw-27c6-jv9c

Blast Radius: 7.6

Affected Packages