FreeSSHD 1.2.1/1.2.2/1.2.6 on Windows Authentication freeSSHd.exe improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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9.1$0-$5k0.00

A vulnerability classified as critical has been found in FreeSSHD 1.2.1/1.2.2/1.2.6 on Windows (SSH Server Software). Affected is an unknown function of the file freeSSHd.exe of the component Authentication Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, and integrity. CVE summarizes:

freeSSHd.exe in freeSSHd through 1.2.6 allows remote attackers to bypass authentication via a crafted session, as demonstrated by an OpenSSH client with modified versions of ssh.c and sshconnect2.c.

The bug was discovered 12/02/2012. The weakness was released 12/01/2012 by kingcope as not defined mailinglist post (Bugtraq). The advisory is shared for download at seclists.org. The public release happened without coordination with the vendor. This vulnerability is traded as CVE-2012-6066 since 12/04/2012. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed by kingcope (kingcope) and been published immediately after the advisory. The exploit is shared for download at seclists.org. It is declared as highly functional. The vulnerability scanner Nessus provides a plugin with the ID 63223 (freeFTPd / freeSSHd SFTP Authentication Bypass), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gain a shell remotely and running in the context r.

The best possible mitigation is suggested to be disabling the affected component.

The vulnerability is also documented in the databases at X-Force (80476), Tenable (63223) and Exploit-DB (23079). Entry connected to this vulnerability is available at 7099.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

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CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 9.1

VulDB Base Score: 9.1
VulDB Temp Score: 9.1
VulDB Vector: 🔍
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CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Author: kingcope (kingcope)
Download: 🔍

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Nessus ID: 63223
Nessus Name: freeFTPd / freeSSHd SFTP Authentication Bypass
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

MetaSploit ID: freesshd_authbypass.rb
MetaSploit Name: Freesshd Authentication Bypass
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Disable
Status: 🔍

0-Day Time: 🔍
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Timelineinfo

12/01/2012 🔍
12/01/2012 +0 days 🔍
12/01/2012 +0 days 🔍
12/02/2012 +1 days 🔍
12/02/2012 +0 days 🔍
12/02/2012 +0 days 🔍
12/02/2012 +0 days 🔍
12/03/2012 +1 days 🔍
12/04/2012 +1 days 🔍
12/04/2012 +0 days 🔍
12/04/2012 +0 days 🔍
12/11/2012 +7 days 🔍
12/18/2012 +7 days 🔍
07/30/2019 +2415 days 🔍

Sourcesinfo

Advisory: seclists.org
Researcher: kingcope
Status: Not defined

CVE: CVE-2012-6066 (🔍)
X-Force: 80476
SecurityTracker: 1027825
Vulnerability Center: 37704 - freeSSHd 1.2.6 and Earlier Remote Authentication Bypass via a Crafted Session, High
SecurityFocus: 56782 - FreeFTPD 'SFTP' Authentication Mechanism Authentication Bypass Vulnerability
Secunia: 51454
OSVDB: 88006 - CVE-2012-6066 - FreeSSHd - Authentication Bypass Issue

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 12/04/2012 10:18
Updated: 07/30/2019 20:16
Changes: 12/04/2012 10:18 (91), 07/30/2019 20:16 (2)
Complete: 🔍
Committer:

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