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V-221667

CAT II (Medium)

The Oracle Linux operating system must be configured so that /etc/pam.d/passwd implements /etc/pam.d/system-auth when changing passwords.

Rule ID

SV-221667r1015164_rule

STIG

Oracle Linux 7 Security Technical Implementation Guide

Version

V3R5

CCIs

CCI-000192 CCI-004066

Discussion

Pluggable authentication modules (PAM) allow for a modular approach to integrating authentication methods. PAM operates in a top-down processing model and if the modules are not listed in the correct order, an important security function could be bypassed if stack entries are not centralized.

Check Content

Verify that /etc/pam.d/passwd is configured to use /etc/pam.d/system-auth when changing passwords:

# cat /etc/pam.d/passwd | grep -i substack | grep -i system-auth
password substack system-auth

If no results are returned, the line is commented out, this is a finding.

Fix Text

Configure PAM to utilize /etc/pam.d/system-auth when changing passwords.

Add the following line to "/etc/pam.d/passwd" (or modify the line to have the required value):

password substack system-auth