XSS in Moodle
CVE-2022-35653
A reflected XSS issue was identified in the LTI module of Moodle. The vulnerability exists due to insufficient sanitization of user-supplied data in the LTI module. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website to steal potentially sensitive information, change appearance of the web page, can perform phishing and drive-by-download attacks. This vulnerability does not impact authenticated users.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.045 (90.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Moodle — versions 4.0.0, 4.0.1
- Fedoraproject Fedora — versions 35, 36
- Redhat Enterprise_linux — versions 8.0
- N/a Moodle — versions Fixed in moodle 4.0.2, moodle 3.11.8, moodle 3.9.15
Weakness classification (CWE)
Public proof-of-concept exploits
References
- patrick@puiterwijk.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- patrick@puiterwijk.org (Patch, x_refsource_MISC, Vendor Advisory)
- patrick@puiterwijk.org (Patch, x_refsource_MISC, Vendor Advisory)
- patrick@puiterwijk.org (x_refsource_FEDORA, vendor-advisory)
- patrick@puiterwijk.org (x_refsource_FEDORA, vendor-advisory)
Frequently asked questions
- What is CVE-2022-35653?
- CVE-2022-35653 is a medium-severity vulnerability in Moodle, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-07-25.
- How severe is CVE-2022-35653?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2022-35653 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.