Cisco VPN 3000 Concentrator up to 4.7(2)G FTP Management Stored improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco VPN 3000 Concentrator up to 4.7(2)G. It has been rated as critical. Affected is an unknown function of the component FTP Management. This manipulation causes improper authentication (Stored). This vulnerability is registered as CVE-2006-4313. Remote exploitation of the attack is possible. Furthermore, an exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Cisco VPN 3000 Concentrator up to 4.7(2)G (Network Encryption Software). Affected by this vulnerability is an unknown function of the component FTP Management. The manipulation with an unknown input leads to a improper authentication vulnerability (Stored). The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, and integrity. The summary by CVE is:

Multiple unspecified vulnerabilities in Cisco VPN 3000 series concentrators before 4.1, 4.1.x up to 4.1(7)L, and 4.7.x up to 4.7(2)F allow attackers to execute the (1) CWD, (2) MKD, (3) CDUP, (4) RNFR, (5) SIZE, and (6) RMD FTP commands to modify files or create and delete directories via unknown vectors.

The weakness was published 08/24/2006 with NCC Group (Website). The advisory is shared at cisco.com. This vulnerability is known as CVE-2006-4313 since 08/23/2006. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

After 1 days, there has been an exploit disclosed. It is possible to download the exploit at securiteam.com. It is declared as highly functional. We expect the 0-day to have been worth approximately $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 27288 (Cisco VPN 3000 Concentrator FTP Arbitrary File Access Vulnerability).

Upgrading to version 4.1(7)M eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (28539), SecurityFocus (BID 19680†), OSVDB (28138†), Secunia (SA21617†) and SecurityTracker (ID 1016737†). Similar entry is available at VDB-84484. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 7.4

VulDB Base Score: 8.2
VulDB Temp Score: 7.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: vpn_3000_ftp_bypass.rb
MetaSploit Name: Cisco VPN Concentrator 3000 FTP Unauthorized Administrative Access
MetaSploit File: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Exploit Delay Time: 🔍

Upgrade: VPN 3000 Concentrator 4.1(7)M
Patch: cisco.com
Fortigate IPS: 🔍

Timelineinfo

08/23/2006 🔍
08/23/2006 +0 days 🔍
08/23/2006 +0 days 🔍
08/23/2006 +0 days 🔍
08/23/2006 +0 days 🔍
08/24/2006 +1 days 🔍
08/24/2006 +0 days 🔍
08/24/2006 +0 days 🔍
08/25/2006 +0 days 🔍
08/27/2006 +2 days 🔍
08/29/2006 +2 days 🔍
06/18/2025 +6868 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Organization: NCC Group
Status: Confirmed

CVE: CVE-2006-4313 (🔍)
GCVE (CVE): GCVE-0-2006-4313
GCVE (VulDB): GCVE-100-2485
X-Force: 28539 - Cisco VPN 3000 Concentrator FTP command execution, Medium Risk
SecurityFocus: 19680 - Cisco VPN 3000 Concentrator FTP Arbitrary File Access Vulnerability
Secunia: 21617 - Cisco VPN 3000 Concentrator FTP Management Vulnerabilities, Less Critical
OSVDB: 28138 - Cisco VPN 3000 Concentrator FTP Management Unauthorized Command Execution (CSCse10733)
SecurityTracker: 1016737 - Cisco VPN 3000 Concentrator Lets Remote Users Access Certain FTP Commands
Vulnerability Center: 12577 - [cisco-sa-20060823-vpn3k] Cisco VPN 3000 Concentrators Multiple File Modifictaion Vulnerabilities, Medium
Vupen: ADV-2006-3368

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

Entryinfo

Created: 08/29/2006 10:47
Updated: 06/18/2025 16:03
Changes: 08/29/2006 10:47 (88), 06/07/2017 16:02 (8), 06/18/2025 16:03 (17)
Complete: 🔍
Cache ID: 216:510:103

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