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CVE-2006-4430

UnknownEPSS 1.91%

Last modified

CVE-2006-4430 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.91% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
1.91%

77.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
CiscoNetwork Admission Control<= 3.6.4.1
CiscoNetwork Admission Control Manager And Server System Software3.3
CiscoNetwork Admission Control Manager And Server System Software3.3.1
CiscoNetwork Admission Control Manager And Server System Software3.3.2
CiscoNetwork Admission Control Manager And Server System Software3.3.3
CiscoNetwork Admission Control Manager And Server System Software3.3.4
CiscoNetwork Admission Control Manager And Server System Software3.3.5
CiscoNetwork Admission Control Manager And Server System Software3.3.6
CiscoNetwork Admission Control Manager And Server System Software3.3.7
CiscoNetwork Admission Control Manager And Server System Software3.3.8
CiscoNetwork Admission Control Manager And Server System Software3.3.9
CiscoNetwork Admission Control Manager And Server System Software3.4
CiscoNetwork Admission Control Manager And Server System Software3.4.1
CiscoNetwork Admission Control Manager And Server System Software3.4.2
CiscoNetwork Admission Control Manager And Server System Software3.4.3
CiscoNetwork Admission Control Manager And Server System Software3.4.4
CiscoNetwork Admission Control Manager And Server System Software3.4.5
CiscoNetwork Admission Control Manager And Server System Software3.5
CiscoNetwork Admission Control Manager And Server System Software3.5\(9\)
CiscoNetwork Admission Control Manager And Server System Software3.5.1
CiscoNetwork Admission Control Manager And Server System Software3.5.2
CiscoNetwork Admission Control Manager And Server System Software3.5.3
CiscoNetwork Admission Control Manager And Server System Software3.5.4
CiscoNetwork Admission Control Manager And Server System Software3.5.5
CiscoNetwork Admission Control Manager And Server System Software3.6.0.1
CiscoNetwork Admission Control Manager And Server System Software3.6.4.0.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2006-4430?
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.
How severe is CVE-2006-4430?
Severity scoring for CVE-2006-4430 is pending analysis. The EPSS model estimates a 1.91% probability of exploitation in the next 30 days.
How do I fix CVE-2006-4430?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST