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AIX must limit the number of concurrent sessions to 10 for all accounts and/or account types.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-215172AIX7-00-001004SV-215172r958398_ruleCCI-000054medium
Description
Operating system management includes the ability to control the number of users and user sessions that utilize an operating system. Limiting the number of allowed users and sessions per user is helpful in reducing the risks related to DoS attacks.
STIGDate
IBM AIX 7.x Security Technical Implementation Guide2026-06-15

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (11) 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.

HRS-02Position Categorization
1.00
HRS-11Separation of Duties (SoD)
1.00
IAC-01Identity & Access Management (IAM)
1.00
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-08Role-Based Access Control (RBAC)
1.00
IAC-21Least Privilege
1.00

+1 more (top 10 by confidence shown)

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (28) 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-12Session Termination
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-3Access Enforcement
1.00
AC-3(4)Discretionary Access Control
1.00
AC-7Unsuccessful Logon Attempts
1.00
AU-9Protection of Audit Information
1.00

+18 more (top 10 by confidence shown)

CCI1 mapping
CCI-000054
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-05
1.00

Who does this work

8 NICE work roles and 6 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-215172r958398_chk)

From the command prompt, execute the following command to display maxulogs values for all the user account: # lsuser -a maxulogs ALL The above command should yield the following output: root maxulogs=10 user_1 maxulogs=10 If the above command shows any user account that does not have the "maxulogs" attribute set, or its value is "0", or its value greater than "10", this is a finding.

Fix Text (F-16368r293968_fix)

From the command prompt, execute the following command to set "maxulogs=10" for the "default:" stanza in the "/etc/security/user" file: # chsec -f /etc/security/user -s default -a maxulogs=10 For each user account whose "maxulogs" value is greater than "10", or their "maxulogs" value is not set, or the values are set to "0", execute the following command to set "maxulogs=10": # chuser maxulogs=10 [user_name]