Check: SRG-APP-000156-NDM-000250
Network Device Management SRG:
SRG-APP-000156-NDM-000250
(in versions v4 r3 through v2 r7)
Title
The network device must implement replay-resistant authentication mechanisms for network access to privileged accounts. (Cat II impact)
Discussion
A replay attack may enable an unauthorized user to gain access to the application. Authentication sessions between the authenticator and the application validating the user credentials must not be vulnerable to a replay attack. An authentication process resists replay attacks if it is impractical to achieve a successful authentication by recording and replaying a previous authentication message. Techniques used to address this include protocols using nonces (e.g., numbers generated for a specific one-time use) or challenges (e.g., TLS, WS_Security). Additional techniques include time-synchronous or challenge-response one-time authenticators.
Check Content
Determine if the network device implements replay-resistant authentication mechanisms for network access to privileged accounts. This requirement may be verified by demonstration, configuration review, or validated test results. This requirement may be met through use of a properly configured authentication server if the device is configured to use the authentication server. If the network device does not implement replay-resistant authentication mechanisms for network access to privileged accounts, this is a finding.
Fix Text
Configure the network device to implement replay-resistant authentication mechanisms for network access to privileged accounts.
Additional Identifiers
Rule ID: SV-202055r879597_rule
Vulnerability ID: V-202055
Group Title: SRG-APP-000156
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001941 |
The information system implements replay-resistant authentication mechanisms for network access to privileged accounts. |
Controls
Number | Title |
---|---|
IA-2 (8) |
Network Access To Privileged Accounts - Replay Resistant |