Detections
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1.14 CISC-ND-000530

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Information

The Cisco switch must be configured to implement replay-resistant authentication mechanisms for network access to privileged accounts.

GROUP ID: V-220488
RULE ID: SV-220488r1026069

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.

Solution

Configure SSH to use FIPS-validated HMAC for remote maintenance sessions as shown in the following example:

SSH Example

R1(config)#ssh macs hmac-sha2-256 hmac-sha2-512

See Also

https://workbench.cisecurity.org/benchmarks/23773

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-2(8), CAT|II, CCI|CCI-001941, Rule-ID|SV-220488r1026069_rule, STIG-ID|CISC-ND-000530, Vuln-ID|V-220488

Plugin: Cisco

Control ID: 7264090701423133b8da2ff94c2475ec12153e45d8422fcbbab48bcf0fb968ef