{"id":"GHSA-54qx-8p8w-xhg8","summary":"SFTPGo vulnerable to recovery codes abuse","details":"### Impact\n\nSFTPGo WebAdmin and WebClient support login using TOTP (Time-based One Time Passwords) as a seconday 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.\n\nIn SFTPGo versions from v2.2.0 to v2.3.3 recovery codes can be generated before enabling two-factor authentication.\nAn 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.\n\n### Patches\n\nFixed in v2.3.4.\nRecovery codes can now only be generated after enabling two-factor authentication and are deleted after disabling it.\n\n### Workarounds\n\nRegenerate recovery codes after enabling two-factor authentication.\n\n### References\n\nhttps://github.com/drakkan/sftpgo/issues/965\n","aliases":["CVE-2022-36071","GO-2022-0964"],"modified":"2024-08-21T16:28:54.483117Z","published":"2022-09-16T21:05:28Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2022-09-16T21:05:28Z","nvd_published_at":"2022-09-02T18:15:00Z","cwe_ids":["CWE-287","CWE-916"],"severity":"HIGH"},"references":[{"type":"WEB","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":"WEB","url":"https://github.com/drakkan/sftpgo/issues/965"},{"type":"PACKAGE","url":"https://github.com/drakkan/sftpgo"}],"affected":[{"package":{"name":"github.com/drakkan/sftpgo/v2","ecosystem":"Go","purl":"pkg:golang/github.com/drakkan/sftpgo/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.2.0"},{"fixed":"2.3.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-54qx-8p8w-xhg8/GHSA-54qx-8p8w-xhg8.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L"}]}