OL 8 must limit the number of concurrent sessions to 10 for all accounts and/or account types.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-248666	OL08-00-020024	SV-248666r779564_rule		Low

Description
Operating system management includes the ability to control the number of users and user sessions that use an operating system. Limiting the number of allowed users and sessions per user is helpful in reducing the risks related to denial-of-service attacks. This requirement addresses concurrent sessions for information system accounts and does not address concurrent sessions by single users via multiple system accounts. The maximum number of concurrent sessions should be defined based on mission needs and the operational environment for each system.

Description

Operating system management includes the ability to control the number of users and user sessions that use an operating system. Limiting the number of allowed users and sessions per user is helpful in reducing the risks related to denial-of-service attacks. This requirement addresses concurrent sessions for information system accounts and does not address concurrent sessions by single users via multiple system accounts. The maximum number of concurrent sessions should be defined based on mission needs and the operational environment for each system.

STIG	Date
Oracle Linux 8 Security Technical Implementation Guide	2021-07-21

Details

Check Text ( C-52100r779562_chk )
Verify the operating system limits the number of concurrent sessions to 10 for all accounts and/or account types by issuing the following command: $ sudo grep "maxlogins" /etc/security/limits.conf /etc/security/limits.d/.conf hard maxlogins 10 This can be set as a global domain (with the * wildcard) but may be set differently for multiple domains. If the "maxlogins" item is missing or commented out, or the value is not set to "10" or less for all domains that have the "maxlogins" item assigned, this is a finding.

Check Text ( C-52100r779562_chk )

Verify the operating system limits the number of concurrent sessions to 10 for all accounts and/or account types by issuing the following command:

$ sudo grep "maxlogins" /etc/security/limits.conf /etc/security/limits.d/*.conf

* hard maxlogins 10

This can be set as a global domain (with the * wildcard) but may be set differently for multiple domains.

If the "maxlogins" item is missing or commented out, or the value is not set to "10" or less for all domains that have the "maxlogins" item assigned, this is a finding.

Fix Text (F-52054r779563_fix)
Configure OL 8 to limit the number of concurrent sessions to 10 for all accounts and/or account types. Add the following line to the top of "/etc/security/limits.conf" or in a ".conf" file defined in "/etc/security/limits.d/": * hard maxlogins 10