STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Mar 2026:

TOSS 5 must configure the use of the pam_faillock.so module in the /etc/pam.d/system-auth file.

DISA Rule

SV-282364r1200072_rule

Vulnerability Number

V-282364

Group Title

SRG-OS-000021-GPOS-00005

Rule Version

TOSS-05-000332

Severity

CAT II

CCI(s)

• CCI-000044 - Enforce the organization-defined limit of consecutive invalid logon attempts by a user during the organization-defined time period.

Weight

10

Fix Recommendation

Configure TOSS 5 to include the use of the "pam_faillock.so" module in the /etc/pam.d/system-auth file.

Add/modify the appropriate sections of the "/etc/pam.d/system-auth" file to match the following lines:

Note: The "preauth" line must be listed before "pam_unix.so".

auth required pam_faillock.so preauth
auth required pam_faillock.so authfail
account required pam_faillock.so

Check Contents

Verify the "pam_faillock.so" module is present in the "/etc/pam.d/system-auth" file:

$ grep pam_faillock.so /etc/pam.d/system-auth

auth required pam_faillock.so preauth
auth required pam_faillock.so authfail
account required pam_faillock.so

If the "pam_faillock.so" module is not present in the "/etc/pam.d/system-auth" file with the "preauth" line listed before "pam_unix.so", this is a finding.

Vulnerability Number

V-282364

Documentable

False

Rule Version

TOSS-05-000332

Severity Override Guidance

Verify the "pam_faillock.so" module is present in the "/etc/pam.d/system-auth" file:

$ grep pam_faillock.so /etc/pam.d/system-auth

auth required pam_faillock.so preauth
auth required pam_faillock.so authfail
account required pam_faillock.so

If the "pam_faillock.so" module is not present in the "/etc/pam.d/system-auth" file with the "preauth" line listed before "pam_unix.so", this is a finding.

Check Content Reference

M

Target Key

5738