The BIG-IP Core must display an explicit logoff message to users indicating the reliable termination of authenticated communications sessions when providing access to virtual servers.
An XCCDF Rule
Description
<VulnDiscussion>If a user cannot explicitly end a session, the session may remain open and be exploited by an attacker; this is referred to as a zombie session. Users need to be aware of whether or not the session has been terminated. Logoff messages for access, for example, can be displayed after authenticated sessions have been terminated. However, for some types of interactive sessions including, for example, remote logon, information systems typically send logoff messages as final messages prior to terminating sessions. This policy only applies to ALGs (e.g., identity management or authentication gateways) that provide user account services as part of the intermediary services.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-230215r856824_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
If user access control intermediary services are provided, configure the BIG-IP Core as follows:
Configure a policy in the BIG-IP APM module to display an explicit logoff message to users indicating the reliable termination of authenticated communications sessions.
Apply APM policy to the applicable Virtual Server(s) in the BIG-IP LTM module to display an explicit logoff message to users indicating the reliable termination of authenticated communications sessions when providing access to virtual servers.