30977 : Cisco Network Admission Control (NAC) Quarantined Device Tunneled Traffic Bypass
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Timeline

Disclosure Date
2006-09-19

Description

Cisco NAC contains a flaw that may allow a malicious user to gain unauthorized network access. The issue is triggered when a host is quarantined by NAC, but the DNS, DHCP and EAPoUDP protocols are passed, allowing an attacker to tunnel network traffic over those protocols. This flaw may lead to a loss of integrity.

Classification

Location: Remote / Network Access
Attack Type: Authentication Management
Impact: Loss of Integrity
OSVDB: Concern

Solution

Currently, there are no known upgrades, patches, or workarounds available to correct this issue.

Products

Cisco Systems, Inc.

NAC

Unspecified

References

CVE ID: 2006-4983 (see also: NVD)
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/2006-09/0312.html
Vendor URL: http://www.cisco.com

Credit

Ofir Arkin - ofiratstake.com - @stake, Inc.

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2006-09-27 | Disagree?

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