{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"state":"PUBLISHED","cveId":"CVE-2021-4221","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","assignerShortName":"mozilla","dateUpdated":"2025-04-16T15:49:45.732Z","dateReserved":"2022-02-18T00:00:00.000Z","datePublished":"2022-12-22T00:00:00.000Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla","dateUpdated":"2022-12-22T00:00:00.000Z"},"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."}],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"unspecified","lessThan":"92","status":"affected","versionType":"custom"}]}],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2021-38/"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1704422"}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"Address bar spoofing on Firefox for Android due to RTL characters"}]}]},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T17:16:04.358Z"},"title":"CVE Program Container","references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2021-38/","tags":["x_transferred"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1704422","tags":["x_transferred"]}]},{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-1007","lang":"en","description":"CWE-1007 Insufficient Visual Distinction of Homoglyphs Presented to User"}]}],"metrics":[{"cvssV3_1":{"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"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-04-16T15:48:58.282021Z","id":"CVE-2021-4221","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-04-16T15:49:45.732Z"}}]}}