STIGQter: STIG Summary: IBM AIX 7.x Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

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

DISA Rule

SV-215172r508663_rule

Vulnerability Number

V-215172

Group Title

SRG-OS-000027-GPOS-00008

Rule Version

AIX7-00-001004

Severity

CAT II

CCI(s)

• CCI-000054 - The information system limits the number of concurrent sessions for each organization-defined account and/or account type to an organization-defined number of sessions.

Weight

10

Fix Recommendation

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]

Check Contents

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.

Vulnerability Number

V-215172

Documentable

False

Rule Version

AIX7-00-001004

Severity Override Guidance

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.

Check Content Reference

M

Target Key

4012

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