CVE-2021-21391 (GCVE-0-2021-21391)
Vulnerability from cvelistv5
Published
2021-04-29 00:20
Modified
2024-08-03 18:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Summary
CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0.
References
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T18:09:15.938Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-engine"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-font"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-image"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-list"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-media-embed"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-paste-from-office"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-widget"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "ckeditor5",
"vendor": "ckeditor",
"versions": [
{
"status": "affected",
"version": "\u003c 27.0.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version \u003c= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400: Uncontrolled Resource Consumption",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-04-29T00:20:19",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-engine"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-font"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-image"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-list"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-media-embed"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-paste-from-office"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-widget"
}
],
"source": {
"advisory": "GHSA-3rh3-wfr4-76mj",
"discovery": "UNKNOWN"
},
"title": "Regular expression Denial of Service in multiple packages",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2021-21391",
"STATE": "PUBLIC",
"TITLE": "Regular expression Denial of Service in multiple packages"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "ckeditor5",
"version": {
"version_data": [
{
"version_value": "\u003c 27.0.0"
}
]
}
}
]
},
"vendor_name": "ckeditor"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version \u003c= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-400: Uncontrolled Resource Consumption"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm",
"refsource": "MISC",
"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm"
},
{
"name": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj",
"refsource": "CONFIRM",
"url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj"
},
{
"name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-engine",
"refsource": "MISC",
"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-engine"
},
{
"name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-font",
"refsource": "MISC",
"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-font"
},
{
"name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-image",
"refsource": "MISC",
"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-image"
},
{
"name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-list",
"refsource": "MISC",
"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-list"
},
{
"name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed",
"refsource": "MISC",
"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed"
},
{
"name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office",
"refsource": "MISC",
"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office"
},
{
"name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-widget",
"refsource": "MISC",
"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-widget"
}
]
},
"source": {
"advisory": "GHSA-3rh3-wfr4-76mj",
"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2021-21391",
"datePublished": "2021-04-29T00:20:19",
"dateReserved": "2020-12-22T00:00:00",
"dateUpdated": "2024-08-03T18:09:15.938Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2021-21391\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2021-04-29T01:15:07.883\",\"lastModified\":\"2024-11-21T05:48:15.750\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version \u003c= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0.\"},{\"lang\":\"es\",\"value\":\"CKEditor 5 proporciona una soluci\u00f3n de edici\u00f3n WYSIWYG.\u0026#xa0;Este CVE afecta a los siguientes paquetes npm: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office y ckeditor5-widget.\u0026#xa0;Despu\u00e9s de una auditor\u00eda interna, se detect\u00f3 una vulnerabilidad de denegaci\u00f3n de servicio de expresi\u00f3n regular (ReDoS) en varios paquetes de CKEditor 5.\u0026#xa0;La vulnerabilidad permiti\u00f3 abusar de determinadas expresiones regulares, lo que podr\u00eda causar una perdida significativa del rendimiento, lo que causar\u00eda la congelaci\u00f3n de la pesta\u00f1a del navegador.\u0026#xa0;Afecta a todos los usuarios que usan los paquetes CKEditor 5 enumerados anteriormente en la versi\u00f3n anterior a 26.0.0 e incluy\u00e9ndola.\u0026#xa0;El problema ha sido reconocido y parcheado.\u0026#xa0;La correcci\u00f3n estar\u00e1 disponible en la versi\u00f3n 27.0.0\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:N/A:P\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ckeditor:ckeditor5-engine:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"27.0.0\",\"matchCriteriaId\":\"67079ED7-67C7-43E6-B2ED-FC8F38073844\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ckeditor:ckeditor5-font:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"27.0.0\",\"matchCriteriaId\":\"49A57CEA-AF9A-406B-97E3-0174F98CF961\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ckeditor:ckeditor5-image:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"27.0.0\",\"matchCriteriaId\":\"8AA7F807-41B2-492E-AC3F-ECC940A9D087\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ckeditor:ckeditor5-list:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"27.0.0\",\"matchCriteriaId\":\"ECFF8404-52EF-49E0-BB96-5C366362DD9E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ckeditor:ckeditor5-markdown-gfm:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"27.0.0\",\"matchCriteriaId\":\"2DDE77C4-ECA2-490F-8B67-D9CC0990FF33\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ckeditor:ckeditor5-media-embed:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"27.0.0\",\"matchCriteriaId\":\"C9FD93F0-391D-4910-846C-B972D0737066\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ckeditor:ckeditor5-paste-from-office:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"27.0.0\",\"matchCriteriaId\":\"2B80F6F9-37B6-4FE3-B7C6-07931AD022BD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ckeditor:ckeditor5-widget:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"27.0.0\",\"matchCriteriaId\":\"2BD4B908-0A73-4410-813D-34A4108052D0\"}]}]}],\"references\":[{\"url\":\"https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-engine\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-font\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-image\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-list\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-media-embed\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-paste-from-office\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-widget\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-engine\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-font\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-image\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-list\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-media-embed\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-paste-from-office\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.npmjs.com/package/%40ckeditor/ckeditor5-widget\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
}
}
Loading…
Loading…
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.
- 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.
Loading…
Loading…