CVE-2021-21809 - Vulnerability Details - OpenCVE

Description

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.

Published: 2021-06-23

Score: 9.1 Critical

EPSS: 24.2% Moderate

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

Moodle

affected

Version	Status	Constraints
`Moodle 3.10`	affected	—

Configuration 1 [-]

cpe:2.3:a:moodle:moodle:3.10.0:-:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

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Advisories

Source	ID	Title
Github GHSA	GHSA-c7jj-vfmr-j9mj	Moodle command execution vulnerability exists in the default legacy spellchecker plugin

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

The EPSS score is 0.24173.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277

History

No history.

Subscriptions

Moodle Moodle

MITRE

Status: PUBLISHED

Assigner: talos

Published: 2021-06-23T21:25:46.000Z

Updated: 2024-08-03T18:23:29.453Z

Reserved: 2021-01-04T00:00:00.000Z

Link: CVE-2021-21809

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-06-23T22:15:08.407

Modified: 2026-06-17T03:36:09.460

Link: CVE-2021-21809

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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