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XCCDF
IBM AIX 7.x Security Technical Implementation Guide
SRG-OS-000112-GPOS-00057
AIX must use the SSH server to implement replay-resistant authentication mechanisms for network access to privileged and non-privileged accounts.
AIX must use the SSH server to implement replay-resistant authentication mechanisms for network access to privileged and non-privileged accounts.
An XCCDF Rule
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AIX must use the SSH server to implement replay-resistant authentication mechanisms for network access to privileged and non-privileged accounts.
High Severity
<VulnDiscussion>A replay attack may enable an unauthorized user to gain access to the operating system. Authentication sessions between the authenticator and the operating system 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. A privileged account is any information system account with authorizations of a privileged user. 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. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>