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AIX must set inactivity time-out on login sessions and terminate all login sessions after 10 minutes of inactivity.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-215320AIX7-00-003003SV-215320r1009553_ruleCCI-001133medium
Description
Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of network connections that are associated with communications sessions (i.e., network disconnect). A logical session (for local, network, and remote access) is initiated whenever a user (or process acting on behalf of a user) accesses an organizational information system. Such user sessions can be terminated (and thus terminate user access) without terminating network sessions. Session termination terminates all processes associated with a user's logical session except those processes that are specifically created by the user (i.e., session owner) to continue after the session is terminated. If a maintenance session or connection remains open after maintenance is completed, it may be hijacked by an attacker and used to compromise or damage the system. Some maintenance and test tools are either standalone devices with their own operating systems or are applications bundled with an operating system. Conditions or trigger events requiring automatic session termination can include, for example, organization-defined periods of user inactivity, targeted responses to certain types of incidents, and time-of-day restrictions on information system use. This capability is typically reserved for specific operating system functionality where the system owner, data owner, or organization requires additional assurance. Terminating network connections associated with communications sessions includes, for example, de-allocating associated TCP/IP address/port pairs at AIX level, and de-allocating networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. This does not mean that AIX terminates all sessions or network access; it only ends the inactive session and releases the resources associated with that session. Satisfies: SRG-OS-000279-GPOS-00109, SRG-OS-000163-GPOS-00072, SRG-OS-000126-GPOS-00066
STIGDate
IBM AIX 7.x Security Technical Implementation Guide2026-06-15

Related Frameworks

3 mappings across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (10) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-01.2Authenticate, Authorize and Audit (AAA)
1.00
IAC-02Identification & Authentication for Organizational Users
1.00
IAC-03Identification & Authentication for Non-Organizational Users
1.00
IAC-04Identification & Authentication for Devices
1.00
IAC-05Identification & Authentication for Third-Party Technology Assets, Applications and/or Services (TAAS)
1.00
IAC-25Session Termination
1.00
NET-07Network Connection Termination
1.00
MNT-05Remote Maintenance
0.50
MNT-05.1Auditing Remote Maintenance
0.50
MNT-05.2Remote Maintenance Notifications
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (35) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-10Concurrent Session Control
1.00
AC-11Device Lock
1.00
AC-11(1)Pattern-hiding Displays
1.00
AC-12Session Termination
1.00
AC-12(1)User-initiated Logouts
1.00
AC-12(2)Termination Message
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00

+25 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (3) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.1.11
1.00
3.13.9
1.00
3.7.5
1.00
CCI3 mappings
CCI-000879
1.00
CCI-001133
1.00
CCI-002361
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.AA-03
1.00

Who does this work

7 NICE work roles and 5 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-215320r1009553_chk)

Check if "TMOUT" and "TIMEOUT" environment variables are set to "600" (in seconds) in "/etc/profile" file: # grep -E " TMOUT|TIMEOUT" /etc/profile readonly TMOUT=600; readonly TIMEOUT=600; export TMOUT TIMEOUT If they are not set in "/etc/profile" file, are commented out, or their values are greater than "600", this is a finding.

Fix Text (F-16516r294412_fix)

Add or update the following line in the "/etc/profile" file: readonly TMOUT=600; readonly TIMEOUT=600; export TMOUT TIMEOUT