CVE-2021-20186

CVSS V2 Low 2.1 CVSS V3 Medium 5.4

Description

It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that if the TeX notation filter was enabled, additional sanitizing of TeX content was required to prevent the risk of stored XSS.

Overview

CVE ID
CVE-2021-20186

Assigner
secalert@redhat.com

Vulnerability Status
Analyzed

Published Version
2021-01-28T19:15:13

Last Modified Date
2021-02-01T14:55:35

Weakness Enumerations

CWE	URL
CWE-79	http://cwe.mitre.org/data/definitions/79.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:moodle:moodle::::::::	1	OR		3.5.16
cpe:2.3:a:moodle:moodle::::::::	1	OR	3.8.0	3.8.7
cpe:2.3:a:moodle:moodle::::::::	1	OR	3.9.0	3.9.4
cpe:2.3:a:moodle:moodle::::::::	1	OR	3.10.0	3.10.1

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:H/Au:S/C:P/I:N/A:N

Access Vector
NETWORK

Access Compatibility
HIGH

Authentication
SINGLE

Confidentiality Impact
PARTIAL

Integrity Impact
NONE

Availability Impact
NONE

Base Score
2.1

Severity
LOW

Exploitability Score
3.9

Impact Score
2.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
REQUIRED

Scope
CHANGED

Confidentiality Impact
LOW

Availability Impact
NONE

Base Score
5.4

Base Severity
MEDIUM

Exploitability Score
2.3

Impact Score
2.7

References

Reference URL	Reference Tags
https://moodle.org/mod/forum/discuss.php?d=417170	Patch Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-20186
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20186

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:25:17				Added to TrackCVE
2022-12-05 21:03:00	2021-01-28T19:15Z	2021-01-28T19:15:13	CVE Published Date	updated
2022-12-05 21:03:00		2021-02-01T14:55:35	CVE Modified Date	updated
2022-12-05 21:03:00		Analyzed	Vulnerability Status	updated