{"id":"CVE-2022-31742","state":"PUBLISHED","title":"An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key ","description":"An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key handles. This could have led to cross-origin account linking in violation of WebAuthn goals. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.","publishedAt":"2022-12-22T00:00:00.000Z","updatedAt":"2025-04-15T18:36:35.842Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Thunderbird","Mozilla Firefox","Mozilla Firefox ESR"],"affected":[{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"unspecified","status":"affected","lessThan":"91.10","versionType":"custom"}]},{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"unspecified","status":"affected","lessThan":"101","versionType":"custom"}]},{"vendor":"Mozilla","product":"Firefox ESR","versions":[{"version":"unspecified","status":"affected","lessThan":"91.10","versionType":"custom"}]}],"references":["https://www.mozilla.org/security/advisories/mfsa2022-20/","https://www.mozilla.org/security/advisories/mfsa2022-22/","https://www.mozilla.org/security/advisories/mfsa2022-21/","https://bugzilla.mozilla.org/show_bug.cgi?id=1730434"],"weaknesses":["CWE-203"],"ingestedAt":"2026-10-29T19:50:06.617Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/31xxx/CVE-2022-31742.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-31742","state":"PUBLISHED","datePublished":"2022-12-22T00:00:00.000Z","dateUpdated":"2025-04-15T18:36:35.842Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2022-05-26T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key handles. This could have led to cross-origin account linking in violation of WebAuthn goals. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10."}],"affected":[{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"unspecified","status":"affected","lessThan":"91.10","versionType":"custom"}]},{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"unspecified","status":"affected","lessThan":"101","versionType":"custom"}]},{"vendor":"Mozilla","product":"Firefox ESR","versions":[{"version":"unspecified","status":"affected","lessThan":"91.10","versionType":"custom"}]}],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2022-20/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2022-22/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2022-21/"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1730434"}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"Querying a WebAuthn token with a large number of allowCredential entries may have leaked cross-origin information"}]}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2022-12-22T00:00:00.000Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2022-20/","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2022-22/","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2022-21/","tags":["x_transferred"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1730434","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T07:26:01.017Z"}},{"title":"CISA ADP Vulnrichment","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1730434","tags":["exploit"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","integrityImpact":"NONE","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-04-15T18:36:32.270819Z","id":"CVE-2022-31742","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-203","type":"CWE","lang":"en","description":"CWE-203 Observable Discrepancy"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-04-15T18:36:35.842Z"}}]}}}