{"containers":{"cna":{"affected":[{"product":"Firefox","vendor":"Mozilla","versions":[{"lessThan":"87","status":"affected","version":"unspecified","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"A malicious extension with the 'search' permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have cross-origin permissions. This cross-origin request was made without cookies, so the sensitive information disclosed by the violation was limited to local-network resources or resources that perform IP-based authentication. This vulnerability affects Firefox < 87."}],"problemTypes":[{"descriptions":[{"description":"A malicious extension could have performed credential-less same origin policy violations","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2021-06-24T13:27:30.000Z","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla"},"references":[{"tags":["x_refsource_MISC"],"url":"https://www.mozilla.org/security/advisories/mfsa2021-10/"},{"tags":["x_refsource_MISC"],"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1692623"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security@mozilla.org","ID":"CVE-2021-23986","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Firefox","version":{"version_data":[{"version_affected":"<","version_value":"87"}]}}]},"vendor_name":"Mozilla"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A malicious extension with the 'search' permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have cross-origin permissions. This cross-origin request was made without cookies, so the sensitive information disclosed by the violation was limited to local-network resources or resources that perform IP-based authentication. This vulnerability affects Firefox < 87."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"A malicious extension could have performed credential-less same origin policy violations"}]}]},"references":{"reference_data":[{"name":"https://www.mozilla.org/security/advisories/mfsa2021-10/","refsource":"MISC","url":"https://www.mozilla.org/security/advisories/mfsa2021-10/"},{"name":"https://bugzilla.mozilla.org/show_bug.cgi?id=1692623","refsource":"MISC","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1692623"}]}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T19:14:09.955Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://www.mozilla.org/security/advisories/mfsa2021-10/"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1692623"}]}]},"cveMetadata":{"assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","assignerShortName":"mozilla","cveId":"CVE-2021-23986","datePublished":"2021-03-31T13:41:04.000Z","dateReserved":"2021-01-13T00:00:00.000Z","dateUpdated":"2024-08-03T19:14:09.955Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}