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CVE-2021-21809

HIGH
Published 2021-06-23T21:25:46
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CVSS Score

V3.0
8.2
/10
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:L
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01
0.156
probability
of exploitation in the wild

There is a 15.6% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25
Exploit Probability
Percentile: 0.959
Higher than 95.9% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
LOW
Availability
LOW

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed CRITICAL

Moodle command execution vulnerability exists in the default legacy spellchecker plugin

GHSA-c7jj-vfmr-j9mj

Advisory Details

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

Affected Packages

Packagist moodle/moodle
Packagist moodle/moodle
Packagist moodle/moodle

CVSS Scoring

CVSS Score

9.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References

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

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: April 24, 2024

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277
http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html
Published: 2021-06-23T21:25:46
Last Modified: 2024-08-03T18:23:29.453Z
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