The SUSE operating system must be configured to not overwrite Pluggable Authentication Modules (PAM) configuration on package changes.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-217189	SLES-12-010910	SV-217189r505931_rule		Medium

Description
"pam-config" is a command line utility that 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
SLES 12 Security Technical Implementation Guide	2020-09-10

Details

Check Text ( C-18417r369723_chk )
Verify the SUSE operating system is configured to not overwrite Pluggable Authentication Modules (PAM) configuration on package changes. Check that soft links between PAM configuration files are removed with the following command: # find /etc/pam.d/ -type l -iname "common-*" If any results are returned, this is a finding.

Fix Text (F-18415r369724_fix)
Remove the SUSE operating system soft links for the PAM configuration files with the following command: # find /etc/pam.d/ -type l -iname "common-" -delete Copy the PAM configuration files to their static locations: # for X in /etc/pam.d/common--pc; do cp -ivp $X ${X:0:-3}; done Additional information on the configuration of multifactor authentication on the SUSE operating system can be found at https://www.suse.com/communities/blog/configuring-smart-card-authentication-suse-linux-enterprise/.

Fix Text (F-18415r369724_fix)

Remove the SUSE operating system soft links for the PAM configuration files with the following command:

# find /etc/pam.d/ -type l -iname "common-*" -delete

Copy the PAM configuration files to their static locations:

# for X in /etc/pam.d/common-*-pc; do cp -ivp $X ${X:0:-3}; done

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