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CVE-2021-20280

Good to know:

Date: March 15, 2021

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.

Language: PHP

Severity Score

5.4

Related Resources (13)

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-20280

Url: https://moodle.org/mod/forum/discuss.php?d=419651

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FGOMHMYM3WICJ6D6U22Z6LPJGT5A6MZM

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/

Url: https://github.com/moodle/moodle/commit/a303eb9e9e387f95ea2a80cb1ce6c0b132ec1cc4

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/

Url: https://github.com/moodle/moodle

Url: http://packetstormsecurity.com/files/164817/Moodle-Cross-Site-Scripting-Server-Side-Request-Forgery.html

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGOMHMYM3WICJ6D6U22Z6LPJGT5A6MZM/

Url: https://bugzilla.redhat.com/show_bug.cgi?id=1939037

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS

Url: https://www.mend.io/vulnerability-database/CVE-2021-20280

Severity Score

5.4

Weakness Type (CWE)

Cross-Site Scripting (XSS)

CWE-79

Top Fix

Upgrade Version

Upgrade to version v3.5.17,v3.8.8,v3.9.5,v3.10.2

CVSS v3.1

Base Score:	5.4
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

CVSS v2

Base Score:	3.5
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	SINGLE
Confidentiality (C):	NONE
Integrity (I):	PARTIAL
Availability (A):	NONE
Additional information:

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