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

AIX must prohibit password reuse for a minimum of five generations.

DISA Rule

SV-215224r508663_rule

Vulnerability Number

V-215224

Group Title

SRG-OS-000077-GPOS-00045

Rule Version

AIX7-00-001127

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

From the command prompt, run the following command to set "histsize=5" for the default stanza in "/etc/security/user":
# chsec -f /etc/security/user -s default -a histsize=5

For each user who has "histsize" value less than "5", set its "histsize" to "5" by running the following command from command prompt:
# chsec -f /etc/security/user -s [user_name] -a histsize=5

Check Contents

From the command prompt, run the following command to check the system default "histsize" attribute value:
# lssec -f /etc/security/user -s default -a histsize
default histsize=5

If the default "histsize" value is not set, or its value is less than "5", this is a finding.

From the command prompt, run the following command to check "histsize" attribute value for all accounts:
# lsuser -a histsize ALL
root histsize=5
user1 histsize=5
user2 histsize=5
user3 histsize=6

If any user does not have "histsize" set, or its "histsize" value is less than "5", this is a finding.

Vulnerability Number

V-215224

Documentable

False

Rule Version

AIX7-00-001127

Severity Override Guidance

From the command prompt, run the following command to check the system default "histsize" attribute value:
# lssec -f /etc/security/user -s default -a histsize
default histsize=5

If the default "histsize" value is not set, or its value is less than "5", this is a finding.

From the command prompt, run the following command to check "histsize" attribute value for all accounts:
# lsuser -a histsize ALL
root histsize=5
user1 histsize=5
user2 histsize=5
user3 histsize=6

If any user does not have "histsize" set, or its "histsize" value is less than "5", this is a finding.

Check Content Reference

M

Target Key

4012

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