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-223216r513337_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