Bootloader authentication must be enabled to prevent users without privilege to gain access to restricted file system resources.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-240408	VRAU-SL-000425	SV-240408r670965_rule		Medium

Description
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods that do not rely solely on the possession of a certificate for access. Successful authentication must not automatically give an entity access to an asset or security boundary. Authorization procedures and controls must be implemented to ensure each authenticated entity also has a validated and current authorization. Authorization is the process of determining whether an entity, once authenticated, is permitted to access a specific asset. Information systems use access control policies and enforcement mechanisms to implement this requirement. Access control policies include identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system.

Description

To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods that do not rely solely on the possession of a certificate for access. Successful authentication must not automatically give an entity access to an asset or security boundary. Authorization procedures and controls must be implemented to ensure each authenticated entity also has a validated and current authorization. Authorization is the process of determining whether an entity, once authenticated, is permitted to access a specific asset. Information systems use access control policies and enforcement mechanisms to implement this requirement. Access control policies include identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system.

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

Details

Check Text ( C-43641r670963_chk )
To verify a boot password exists, in /boot/grub/menu.lst run the following command: # grep password /boot/grub/menu.lst The output should show the following: password --encrypted $1$[rest-of-the-password-hash] If it does not, this is a finding.

Fix Text (F-43600r670964_fix)
Run the following command: # /usr/sbin/grub-md5-crypt An MD5 password is generated. After the password is supplied, the command supplies the md5 hash output. Append the password to the "menu.lst" file by running the following command: echo 'password --md5 ' >> /boot/grub/menu.lst Or use yast2 to set the bootloader password. Open the Boot Loader Installation tab. Click "Boot Loader Options". Activate the Protect Boot Loader with Password option with a click and type in the password twice. Click "OK" twice to save the changes.

Fix Text (F-43600r670964_fix)

Run the following command:

# /usr/sbin/grub-md5-crypt

An MD5 password is generated. After the password is supplied, the command supplies the md5 hash output.

Append the password to the "menu.lst" file by running the following command:

echo 'password --md5 ' >> /boot/grub/menu.lst

Or use yast2 to set the bootloader password.

Open the Boot Loader Installation tab.

Click "Boot Loader Options".

Activate the Protect Boot Loader with Password option with a click and type in the password twice.

Click "OK" twice to save the changes.