CVE-2021-21809

CVSS V2 High 9 CVSS V3 Critical 9.1
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.
Overview
  • CVE ID
  • CVE-2021-21809
  • Assigner
  • talos-cna@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-06-23T22:15:08
  • Last Modified Date
  • 2022-08-24T19:43:49
Weakness Enumerations
CWE URL
CWE-78 http://cwe.mitre.org/data/definitions/78.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:moodle:moodle:3.10.0:-:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 9
  • Severity
  • HIGH
  • Exploitability Score
  • 8
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.1
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 2.3
  • Impact Score
  • 6
References
Reference URL Reference Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277 Third Party Advisory Exploit
http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html Exploit Third Party Advisory VDB Entry
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-21809
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21809
History
Created Old Value New Value Data Type Notes
2022-04-20 17:00:22 Added to TrackCVE
2022-12-05 04:53:16 2021-06-23T22:15Z 2021-06-23T22:15:08 CVE Published Date updated
2022-12-05 04:53:16 2022-08-24T19:43:49 CVE Modified Date updated
2022-12-05 04:53:16 Analyzed Vulnerability Status updated