Global settings defined in common- {account,auth,password,session} must be applied in the pam.d definition files.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-240394	VRAU-SL-000345	SV-240394r670923_rule		Medium

Description
Pam global requirements are generally defined in the common-account, common-auth, common- password and common-session files located in the /etc/pam.d directory. In order for the requirements to be applied the file(s) containing them must be included directly or indirectly in each program's definition file in /etc/pam.d

STIG	Date
VMware vRealize Automation 7.x SLES Security Technical Implementation Guide	2021-06-24

Details

Check Text ( C-43627r670921_chk )
Verify that common-{account,auth,password,session} settings are being applied. Verify that local customization has occurred in the common- {account,auth,password,session}-pc file(s) by some method other than the use of the pam-config utility. The files "/etc/pam.d/common-{account,auth,password,session} -pc " are auto-generated by "pam-config". Any manual changes made to them will be lost if "pam-config" is allowed to run. # ls -l /etc/pam.d/common-{account,auth,password,session} If the symlinks point to "/etc/pam.d/common- {account,auth,password,session}-pc" and manual updates have been made in these files, the updates cannot be protected if pam-config is enabled. # ls -l /usr/sbin/pam-config If the setting for "pam-config" is not "000", this is a finding.

Check Text ( C-43627r670921_chk )

Verify that common-{account,auth,password,session} settings are being applied.

Verify that local customization has occurred in the common- {account,auth,password,session}-pc file(s) by some method other than the use of the pam-config utility.

The files "/etc/pam.d/common-{account,auth,password,session} -pc " are auto-generated by "pam-config". Any manual changes made to them will be lost if "pam-config" is allowed to run.

# ls -l /etc/pam.d/common-{account,auth,password,session}

If the symlinks point to "/etc/pam.d/common- {account,auth,password,session}-pc" and manual updates have been made in these files, the updates cannot be protected if pam-config is enabled.

# ls -l /usr/sbin/pam-config

If the setting for "pam-config" is not "000", this is a finding.

Fix Text (F-43586r670922_fix)
In the default distribution of SLES 11, "/etc/pam.d/common- {account,auth,password,session}" are symlinks to their respective "/etc/pam.d/common- {account,auth,password,session}-pc" files. These common- {account,auth,password,session}-pc files are auto-generated by the pam-config utility. Edit /usr/sbin/pam-config permissions to prevent its use: # chmod 000 /usr/sbin/pam-config