CVE-2021-20280

Severity CVSS v4.0:

Pending analysis

Type:

CWE-79 Cross-Site Scripting (XSS)

Publication date:

15/03/2021

Last modified:

07/11/2023

Description

Text-based feedback answers required additional sanitizing to prevent stored XSS and blind SSRF risks in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.40 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope (S): Changed
Confidentiality (C): Low
Integrity (I): Low
Availability (A): None

Base Score 3.x

5.40

Severity 3.x

MEDIUM

Vector 2.0

AV:N/AC:M/Au:S/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 3.50 LOW
Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): Single
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0

3.50

Severity 2.0

LOW

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:moodle:moodle::::::::	3.5.0 (including)	3.5.17 (excluding)
cpe:2.3:a:moodle:moodle::::::::	3.8.0 (including)	3.8.8 (excluding)
cpe:2.3:a:moodle:moodle::::::::	3.9.0 (including)	3.9.5 (excluding)
cpe:2.3:a:moodle:moodle::::::::	3.10.0 (including)	3.10.2 (excluding)
cpe:2.3:o:fedoraproject:fedora:32:::::::*
cpe:2.3:o:fedoraproject:fedora:33:::::::*
cpe:2.3:o:fedoraproject:fedora:34:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-20280

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools