Vulnerability Monitor

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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.

Published

2006-08-29T00:04:00.000

Last Modified

2025-04-03T01:03:51.193

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    NVD-CWE-Other
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco network_admission_control ≤ 3.6.4.1 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.3 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.3.1 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.3.2 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.3.3 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.3.4 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.3.5 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.3.6 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.3.7 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.3.8 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.3.9 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.4 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.4.1 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.4.2 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.4.3 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.4.4 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.4.5 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.5 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.5\(9\) Yes
Application cisco network_admission_control_manager_and_server_system_software 3.5.1 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.5.2 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.5.3 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.5.4 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.5.5 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.6.0.1 Yes
Application cisco network_admission_control_manager_and_server_system_software 3.6.4.0.1 Yes
References