{"id":"CVE-2022-36071","summary":"Recovery codes abuse in SFTPGo","details":"SFTPGo is configurable SFTP server with optional HTTP/S, FTP/S and WebDAV support. SFTPGo WebAdmin and WebClient support login using TOTP (Time-based One Time Passwords) as a secondary authentication factor. Because TOTPs are often configured on mobile devices that can be lost, stolen or damaged, SFTPGo also supports recovery codes. These are a set of one time use codes that can be used instead of the TOTP. In SFTPGo versions from version 2.2.0 to 2.3.3 recovery codes can be generated before enabling two-factor authentication. An attacker who knows the user's password could potentially generate some recovery codes and then bypass two-factor authentication after it is enabled on the account at a later time. This issue has been fixed in version 2.3.4. Recovery codes can now only be generated after enabling two-factor authentication and are deleted after disabling it.","aliases":["GHSA-54qx-8p8w-xhg8","GO-2022-0964"],"modified":"2026-04-10T04:49:35.986200Z","published":"2022-09-02T17:15:12Z","database_specific":{"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/36xxx/CVE-2022-36071.json","cwe_ids":["CWE-287"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/36xxx/CVE-2022-36071.json"},{"type":"ADVISORY","url":"https://github.com/drakkan/sftpgo/security/advisories/GHSA-54qx-8p8w-xhg8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-36071"},{"type":"REPORT","url":"https://github.com/drakkan/sftpgo/issues/965"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/drakkan/sftpgo","events":[{"introduced":"b6bcf0cd94fa7e87000f358350e99756f86d6418"},{"fixed":"df84c42e7e8a1675769fa9065b2781a6abc8ab1b"}]}],"versions":["v2.2.0","v2.2.1","v2.3.0","v2.3.1","v2.3.2","v2.3.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-36071.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L"}]}