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The Juniper SRX Services Gateway must implement replay-resistant authentication mechanisms for network access to privileged accounts.

An XCCDF Rule

Description

<VulnDiscussion>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. There are 2 approved methods for accessing the Juniper SRX which are, in order of preference, the SSH protocol and the console port.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID
SV-223216r960993_rule
Severity
Medium
References
Updated



Remediation - Manual Procedure

Configure SSH to use a replay-resistant authentication mechanism. The following is an example stanza.

[edit]
set system services ssh macs hmac-sha2-512
set system services ssh macs hmac-sha2-256
set system services ssh macs hmac-sha1