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

From SLES 12 Security Technical Implementation Guide

Associated with: CCI-000366

SV-91981r2_rule The SUSE operating system must be configured to not overwrite Pluggable Authentication Modules (PAM) configuration on package changes.

Vulnerability discussion

"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.

Check content

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

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/.

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