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Vulnerability Details : CVE-2006-4430

The Cisco Network Admission Control (NAC) and earlier allows remote attackers to prevent installation of the Cisco Clean Access (CCA) Agent and bypass local and remote protection mechanisms by modifying (1) the HTTP User-Agent header or (2) the behavior of the TCP/IP stack. NOTE: the vendor has disputed the severity of this issue, stating that users cannot bypass authentication mechanisms.
Publish Date : 2006-08-28 Last Update Date : 2008-09-05
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID CWE id is not defined for this vulnerability

- Products Affected By CVE-2006-4430

# Product Type Vendor Product Version Update Edition Language
1 OS Cisco Clean Access 3.3 Version Details Vulnerabilities
2 OS Cisco Clean Access 3.3.1 Version Details Vulnerabilities
3 OS Cisco Clean Access 3.3.2 Version Details Vulnerabilities
4 OS Cisco Clean Access 3.3.3 Version Details Vulnerabilities
5 OS Cisco Clean Access 3.3.4 Version Details Vulnerabilities
6 OS Cisco Clean Access 3.3.5 Version Details Vulnerabilities
7 OS Cisco Clean Access 3.3.6 Version Details Vulnerabilities
8 OS Cisco Clean Access 3.3.7 Version Details Vulnerabilities
9 OS Cisco Clean Access 3.3.8 Version Details Vulnerabilities
10 OS Cisco Clean Access 3.3.9 Version Details Vulnerabilities
11 OS Cisco Clean Access 3.4 Version Details Vulnerabilities
12 OS Cisco Clean Access 3.4.1 Version Details Vulnerabilities
13 OS Cisco Clean Access 3.4.2 Version Details Vulnerabilities
14 OS Cisco Clean Access 3.4.3 Version Details Vulnerabilities
15 OS Cisco Clean Access 3.4.4 Version Details Vulnerabilities
16 OS Cisco Clean Access 3.4.5 Version Details Vulnerabilities
17 OS Cisco Clean Access 3.5(9) Version Details Vulnerabilities
18 OS Cisco Clean Access 3.5 Version Details Vulnerabilities
19 OS Cisco Clean Access 3.5.1 Version Details Vulnerabilities
20 OS Cisco Clean Access 3.5.2 Version Details Vulnerabilities
21 OS Cisco Clean Access 3.5.3 Version Details Vulnerabilities
22 OS Cisco Clean Access 3.5.4 Version Details Vulnerabilities
23 OS Cisco Clean Access 3.5.5 Version Details Vulnerabilities
24 OS Cisco Clean Access Version Details Vulnerabilities
25 OS Cisco Clean Access Version Details Vulnerabilities
26 Application Cisco Network Admission Control Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Cisco Clean Access 25
Cisco Network Admission Control 1

- References For CVE-2006-4430
CISCO 20060822 Response to BugTraq - Cisco Clean Access Agent (Perfigo) Bypass
CISCO 20060826 NAC Agent Installation Bypass
BUGTRAQ 20060826 Re: Cisco NAC Appliance Agent Installation Bypass Vulnerability
BUGTRAQ 20050819 Cisco Clean Access Agent (Perfigo) bypass
BUGTRAQ 20060826 Cisco NAC Appliance Agent Installation Bypass Vulnerability
BID 19726 Cisco NAC Agent Installation Security Bypass Vulnerability Release Date:2006-09-04
BUGTRAQ 20060829 Re: Cisco NAC Appliance Agent Installation Bypass Vulnerability
BUGTRAQ 20050822 RE: Cisco Clean Access Agent (Perfigo) bypass

- Metasploit Modules Related To CVE-2006-4430

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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