gsd-2021-21809
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
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.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-21809",
"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.",
"id": "GSD-2021-21809",
"references": [
"https://packetstormsecurity.com/files/cve/CVE-2021-21809"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-21809"
],
"details": "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.",
"id": "GSD-2021-21809",
"modified": "2023-12-13T01:23:10.356265Z",
"schema_version": "1.4.0"
}
},
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"ID": "CVE-2021-21809",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Moodle",
"version": {
"version_data": [
{
"version_value": "Moodle 3.10"
}
]
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}
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},
"impact": {
"cvss": {
"baseScore": 8.2,
"baseSeverity": "High",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:L",
"version": "3.0"
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"value": "OS command injection"
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"references": {
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{
"name": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277",
"refsource": "MISC",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277"
},
{
"name": "http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html"
}
]
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "=3.10.0",
"affected_versions": "Version 3.10.0",
"cvss_v2": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"cwe_ids": [
"CWE-1035",
"CWE-78",
"CWE-937"
],
"date": "2022-08-24",
"description": "A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle A specially crafted series of HTTP requests can lead to command execution. An attacker must have administrator privileges to exploit this vulnerabilities.",
"fixed_versions": [
"3.10.1"
],
"identifier": "CVE-2021-21809",
"identifiers": [
"CVE-2021-21809"
],
"not_impacted": "All versions before 3.10.0, all versions after 3.10.0",
"package_slug": "packagist/moodle/moodle",
"pubdate": "2021-06-23",
"solution": "Upgrade to version 3.10.1 or above.",
"title": "Incorrect Permission Assignment for Critical Resource",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-21809"
],
"uuid": "c9ceeaea-c38d-40ef-88f0-a2ae08d2f98c"
}
]
},
"nvd.nist.gov": {
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"nodes": [
{
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"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:moodle:moodle:3.10.0:-:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
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"description": {
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}
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},
"problemtype": {
"problemtype_data": [
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]
},
"references": {
"reference_data": [
{
"name": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277",
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"tags": [
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"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277"
},
{
"name": "http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html",
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"url": "http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "COMPLETE",
"baseScore": 9.0,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "HIGH",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.3,
"impactScore": 6.0
}
},
"lastModifiedDate": "2022-08-24T19:43Z",
"publishedDate": "2021-06-23T22:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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