CVE-2021-21254

{"id": "CVE-2021-21254", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "authentication": "SINGLE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2021-01-29T22:15:14.797", "references": [{"url": "https://github.com/ckeditor/ckeditor5/releases/tag/v25.0.0", "tags": ["Release Notes", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-hgmg-hhc8-g5wr", "tags": ["Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm", "source": "security-advisories@github.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "CKEditor 5 is an open source rich text editor framework with a modular architecture. The CKEditor 5 Markdown plugin (@ckeditor/ckeditor5-markdown-gfm) before version 25.0.0 has a regex denial of service (ReDoS) vulnerability. The vulnerability allowed to abuse link recognition regular expression, which could cause a significant performance drop resulting in browser tab freeze. It affects all users using CKEditor 5 Markdown plugin at version <= 24.0.0. The problem has been recognized and patched. The fix will be available in version 25.0.0."}, {"lang": "es", "value": "CKEditor 5 es un framework de edici\u00f3n de texto enriquecido de c\u00f3digo abierto con una arquitectura modular.&#xa0;El plugin CKEditor 5 Markdown (@ckeditor/ckeditor5-markdown-gfm) anterior a versi\u00f3n 25.0.0, presenta una vulnerabilidad de denegaci\u00f3n de servicio de expresiones regulares (ReDoS).&#xa0;La vulnerabilidad permiti\u00f3 abusar de la expresi\u00f3n regular de reconocimiento de enlace, lo que podr\u00eda causar una ca\u00edda significativa en el rendimiento resultando en la congelaci\u00f3n de la pesta\u00f1a del navegador.&#xa0;Afecta a todos los usuarios que usan el plugin CKEditor 5 Markdown en la versi\u00f3n anterior a 24.0.0 e incluy\u00e9ndola.&#xa0;El problema ha sido reconocido y parcheado.&#xa0;La correcci\u00f3n estar\u00e1 disponible en la versi\u00f3n 25.0.0"}], "lastModified": "2023-11-07T03:29:41.453", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ckeditor:ckeditor5:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8B47943C-76FE-4852-86F0-14CA6F0BD30D", "versionEndExcluding": "25.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}