freeFTPd / freeSSHd SFTP Authentication Bypass
critical Nessus Plugin ID 63223
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VPR Score: 7.4
Synopsis
The SFTP server running on the remote host has an authentication bypass vulnerability.Description
The SFTP server included with freeFTPd or freeSSHd has an authentication bypass vulnerability. Authentication can be bypassed by opening an SSH channel before any credentials are provided. A remote, unauthenticated attacker could exploit this to login without providing credentials.After logging in, uploading specially crafted files could result in arbitrary code execution as SYSTEM. Refer to the researcher's advisory for more information.
Solution
There is no known solution at this time.See Also
https://seclists.org/fulldisclosure/2010/Aug/132
Plugin Details
Severity: Critical
ID: 63223
File Name: freeftpd_sftp_auth_bypass.nasl
Version: 1.17
Type: remote
Family: Gain a shell remotely
Published: 12/11/2012
Updated: 6/12/2020
Dependencies: ssh_detect.nasl
Risk Information
Risk Factor: Critical
VPR Score: 7.4
CVSS Score Source: CVE-2012-6067
CVSS v2.0
Base Score: 10
Temporal Score: 9.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Temporal Vector: CVSS2#E:F/RL:U/RC:C
CVSS v3.0
Base Score: 7.3
Temporal Score: 7.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Temporal Vector: CVSS:3.0/E:F/RL:U/RC:C
Vulnerability Information
CPE: cpe:2.3:a:freesshd:freesshd:*:*:*:*:*:*:*:*, cpe:2.3:a:freeftpd:freeftpd:*:*:*:*:*:*:*:*
Excluded KB Items: global_settings/supplied_logins_only
Exploit Available: true
Exploit Ease: Exploits are available
Exploited by Nessus: true
Vulnerability Publication Date: 8/11/2010
Exploitable With
Core Impact
Metasploit (Freesshd Authentication Bypass)
Reference Information
CVE: CVE-2012-6066, CVE-2012-6067