Cisco Network Services (CNS) NetFlow Collection Engine (NFC) before 6.0 has an nfcuser account with the default password nfcuser, which allows remote attackers to modify the product configuration and, when installed on Linux, obtain login access to the host operating system.
CVSS Severity (version 2.0):
Impact Subscore: 10.0
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
The vendor has addressed this issue through the update 6.0.0 of the NetFlow Collection Engine.
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US-CERT Vulnerability Note:
20070425 Default Passwords in NetFlow Collection Engine