STIGQter: STIG Summary: Oracle Linux 6 Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

The system must prohibit the reuse of passwords within five iterations.

DISA Rule

SV-209012r603263_rule

Vulnerability Number

V-209012

Group Title

SRG-OS-000077

Rule Version

OL6-00-000274

Severity

CAT II

CCI(s)

• CCI-000200 - The information system prohibits password reuse for the organization-defined number of generations.

Weight

10

Fix Recommendation

Do not allow users to reuse recent passwords. This can be accomplished by using the "remember" option for the "pam_pwhistory" PAM module. In the file "/etc/pam.d/system-auth", append "remember=5" to the line which refers to the "pam_pwhistory.so" module, as shown:

password required pam_pwhistory.so [existing_options] remember=5

The DoD requirement is five passwords.

Check Contents

To verify the password reuse setting is compliant, run the following command:

# grep remember /etc/pam.d/system-auth /etc/pam.d/password-auth

The output must be a line beginning with "password required pam_pwhistory.so" and ending with "remember=5".

If the line is commented out, the line does not contain the specified elements, or the value for "remember" is less than “5”, this is a finding.

Vulnerability Number

V-209012

Documentable

False

Rule Version

OL6-00-000274

Severity Override Guidance

To verify the password reuse setting is compliant, run the following command:

# grep remember /etc/pam.d/system-auth /etc/pam.d/password-auth

The output must be a line beginning with "password required pam_pwhistory.so" and ending with "remember=5".

If the line is commented out, the line does not contain the specified elements, or the value for "remember" is less than “5”, this is a finding.

Check Content Reference

M

Target Key

2928

Comments