CVE-2021-4221

{"id": "CVE-2021-4221", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "published": "2022-12-22T20:15:12.337", "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1704422", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2021-38/", "tags": ["Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1704422", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2021-38/", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-1007"}]}], "descriptions": [{"lang": "en", "value": "If a domain name contained a RTL character, it would cause the domain to be rendered to the right of the path. This could lead to user confusion and spoofing attacks. <br>*This bug only affects Firefox for Android. Other operating systems are unaffected.*<br>*Note*: Due to a clerical error this advisory was not included in the original announcement, and was added in Feburary 2022. This vulnerability affects Firefox < 92."}, {"lang": "es", "value": "Si un nombre de dominio contuviera un car\u00e1cter RTL, el dominio se representar\u00eda a la derecha de la ruta. Esto podr\u00eda generar confusi\u00f3n en el usuario y ataques de suplantaci\u00f3n de identidad. <br>*Este error s\u00f3lo afecta a Firefox para Android. Otros sistemas operativos no se ven afectados.*<br>*Nota*: Debido a un error administrativo, este aviso no se incluy\u00f3 en el anuncio original y se agreg\u00f3 en febrero de 2022. Esta vulnerabilidad afecta a Firefox &lt; 92."}], "lastModified": "2025-04-16T16:15:19.290", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "117CF1EF-253C-4D02-96C4-EA184FC46C3A", "versionEndExcluding": "92.0"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:google:android:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "F8B9FEC8-73B6-43B8-B24E-1F7C20D91D26"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "security@mozilla.org"}