CVE-2006-4430

Description

The Cisco Network Admission Control (NAC) 3.6.4.1 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.

5.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 2.27% Top 20%

Vendor Advisory cisco.com Vendor Advisory cisco.com

Affected: n/a n/a

References

Link	Tags
http://archive.cert.uni-stuttgart.de/archive/bugtraq/2005/08/msg00200.html	mailing list
http://www.securityfocus.com/bid/19726	vdb entry
http://www.securityfocus.com/archive/1/444737/100/0/threaded	mailing list
http://www.cisco.com/en/US/products/ps6128/products_security_notice09186a00804fa82b.html	vendor advisory
http://www.securityfocus.com/archive/1/408603/30/0/threaded	mailing list
http://www.cisco.com/en/US/products/ps6128/tsd_products_security_response09186a008071d609.html	vendor advisory
http://www.securityfocus.com/archive/1/444501/100/0/threaded	mailing list
http://www.securityfocus.com/archive/1/444424/100/0/threaded	mailing list

Frequently Asked Questions

What is the severity of CVE-2006-4430?: CVE-2006-4430 has been scored as a medium severity vulnerability.
How to fix CVE-2006-4430?: To fix CVE-2006-4430, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2006-4430 being actively exploited in the wild?: It is possible that CVE-2006-4430 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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