GitHub Advisoryadvisory · Go

GHSA-54qx-8p8w-xhg8 SFTPGo vulnerable to recovery codes abuse

HIGH Published 2022-09-16 Modified 2022-09-16 Official page ↗
Aliases
CVE-2022-36071
Ecosystem
Go
Packages
github.com/drakkan/sftpgo/v2
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Weaknesses
CWE-287, CWE-916
Reviewed
2022-09-16

Affected packages

• Go github.com/drakkan/sftpgo/v2: >= 2.2.0, < 2.3.4 → fixed in 2.3.4

Description

Impact SFTPGo 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. In SFTPGo versions from v2.2.0 to v2.3.3 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. Patches Fixed in v2.3.4. Recovery codes can now only be generated after enabling two-factor authentication and are deleted after disabling it. Workarounds Regenerate recovery codes after enabling two-factor authentication. References https://github.com/drakkan/sftpgo/issues/965

Related

Alias · CVE (1)

  • CVE-2022-36071 SFTPGo is configurable SFTP server with optional HTTP/S, FTP/S and WebDAV support. vulnerability

Weakness · CWE (2)

  • CWE-287 Improper Authentication weakness
  • CWE-916 Use of Password Hash With Insufficient Computational Effort weakness

References