CVE-2022-36071

2022-09-0218:15:12

CWE-916

CWE-287

[email protected]

web.nvd.nist.gov

sftpgo

sftp server

totp

two-factor authentication

recovery codes

cve-2022-36071

8.3 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

8.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

30.6%

JSON

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.

Affected configurations

Vulners

NVD

Node

drakkansftpgoRange2.2.0–2.3.4

CPENameOperatorVersion
sftpgo_project:sftpgosftpgo project sftpgolt2.3.4

CPE	Name	Operator	Version
sftpgo_project:sftpgo	sftpgo project sftpgo	lt	2.3.4

CNA Affected

[
  {
    "product": "sftpgo",
    "vendor": "drakkan",
    "versions": [
      {
        "status": "affected",
        "version": ">= 2.2.0, < 2.3.4"
      }
    ]
  }
]