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CVE-2021-21809

Date: June 23, 2021

A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle 3.10. A specially crafted series of HTTP requests can lead to command execution. An attacker must have administrator privileges to exploit this vulnerabilities.

Severity Score

Related Resources (5)

http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html
https://nvd.nist.gov/vuln/detail/CVE-2021-21809
https://github.com/moodle/moodle
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277
https://www.mend.io/vulnerability-database/CVE-2021-21809

Severity Score

Weakness Type (CWE)

OS Command Injections

CWE-78

Incorrect Permission Assignment for Critical Resource

CWE-732

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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