SLEM 5 must be configured to not overwrite Pluggable Authentication Modules (PAM) configuration on package changes.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-261402	SLEM-05-631025	SV-261402r996624_rule		Medium

Description
The "pam-config" command line utility automatically generates a system PAM configuration as packages are installed, updated, or removed from the system. "pam-config" removes configurations for PAM modules and parameters that it does not know about. It may render ineffective PAM configuration by the system administrator and thus impact system security.

STIG	Date
SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide	2024-06-04

Details

Check Text ( C-65131r996071_chk )
Verify SLEM 5 is configured to not overwrite PAM configuration on package changes with the following command: > find /etc/pam.d/ -type l -iname "common-*" If any results are returned, this is a finding.

Fix Text (F-65039r996623_fix)
Copy the PAM configuration files to their static locations and remove SLEM 5 soft links for the PAM configuration files with the following command: > sudo sh -c 'for X in /etc/pam.d/common-*-pc; do cp -ivp --remove-destination $X ${X:0:-3}; done' Additional information on the configuration of multifactor authentication on SLEM 5 can be found at https://www.suse.com/communities/blog/configuring-smart-card-authentication-suse-linux-enterprise/.

Fix Text (F-65039r996623_fix)

Copy the PAM configuration files to their static locations and remove SLEM 5 soft links for the PAM configuration files with the following command:

> sudo sh -c 'for X in /etc/pam.d/common-*-pc; do cp -ivp --remove-destination $X ${X:0:-3}; done'

Additional information on the configuration of multifactor authentication on SLEM 5 can be found at https://www.suse.com/communities/blog/configuring-smart-card-authentication-suse-linux-enterprise/.