II - Mission Support Classified
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The root account must be the only account with GID of 0.
<VulnDiscussion>All accounts with a GID of 0 have root group privileges and must be limited to the group account only.</VulnDiscussion>...Rule Medium Severity -
SRG-OS-000206
<GroupDescription></GroupDescription>Group -
The operating system must reveal error messages only to authorized personnel.
<VulnDiscussion>Proper file permissions and ownership ensures that only designated personnel in the organization can access error messages.&l...Rule Low Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The operator must document all file system objects that have non-standard access control list settings.
<VulnDiscussion>Access Control Lists allow an object owner to expand permissions on an object to specific users and groups in addition to the...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The operating system must be a supported release.
<VulnDiscussion>An operating system release is considered supported if the vendor continues to provide security patches for the product. With...Rule High Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The system must implement non-executable program stacks.
<VulnDiscussion>A common type of exploit is the stack buffer overflow. An application receives, from an attacker, more data than it is prepar...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Address Space Layout Randomization (ASLR) must be enabled.
<VulnDiscussion>Modification of memory area can result in executable code vulnerabilities. ASLR can reduce the likelihood of these attacks. A...Rule Low Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Process core dumps must be disabled unless needed.
<VulnDiscussion>Process core dumps contain the memory in use by the process when it crashed. Process core dump files can be of significant si...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The system must be configured to store any process core dumps in a specific, centralized directory.
<VulnDiscussion>Specifying a centralized location for core file creation allows for the centralized protection of core files. Process core du...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The centralized process core dump data directory must be owned by root.
<VulnDiscussion>Process core dumps contain the memory in use by the process when it crashed. Any data the process was handling may be contain...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The centralized process core dump data directory must be group-owned by root, bin, or sys.
<VulnDiscussion>Process core dumps contain the memory in use by the process when it crashed. Any data the process was handling may be contain...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The centralized process core dump data directory must have mode 0700 or less permissive.
<VulnDiscussion>Process core dumps contain the memory in use by the process when it crashed. Any data the process was handling may be contain...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Kernel core dumps must be disabled unless needed.
<VulnDiscussion>Kernel core dumps may contain the full contents of system memory at the time of the crash. Kernel core dumps may consume a co...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The kernel core dump data directory must be owned by root.
<VulnDiscussion>Kernel core dumps may contain the full contents of system memory at the time of the crash. As the system memory may contain s...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The kernel core dump data directory must be group-owned by root.
<VulnDiscussion>Kernel core dumps may contain the full contents of system memory at the time of the crash. As the system memory may contain s...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The kernel core dump data directory must have mode 0700 or less permissive.
<VulnDiscussion>Kernel core dumps may contain the full contents of system memory at the time of the crash. As the system memory may contain s...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
System BIOS or system controllers supporting password protection must have administrator accounts/passwords configured, and no others. (Intel)
<VulnDiscussion>A system's BIOS or system controller handles the initial startup of a system and its configuration must be protected from una...Rule Low Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The system must require authentication before allowing modification of the boot devices or menus. Secure the GRUB Menu (Intel).
<VulnDiscussion>The flexibility that GRUB provides creates a security risk if its configuration is modified by an unauthorized user. The fail...Rule Low Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The operating system must implement transaction recovery for transaction-based systems.
<VulnDiscussion>Recovery and reconstitution constitutes executing an operating system contingency plan comprised of activities to restore ess...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
SNMP communities, users, and passphrases must be changed from the default.
<VulnDiscussion>Whether active or not, default SNMP passwords, users, and passphrases must be changed to maintain security. If the service is...Rule High Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
A file integrity baseline must be created, maintained, and reviewed at least weekly to determine if unauthorized changes have been made to important system files located in the root file system.
<VulnDiscussion>A file integrity baseline is a collection of file metadata used to evaluate the integrity of the system. A minimal baseline m...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Direct logins must not be permitted to shared, default, application, or utility accounts.
<VulnDiscussion>Shared accounts (accounts where two or more people log in with the same user identification) do not provide identification an...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The system must not have any unnecessary accounts.
<VulnDiscussion>Accounts providing no operational purpose provide additional opportunities for system compromise. Unnecessary accounts includ...Rule Low Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The operating system must conduct backups of user-level information contained in the operating system per organization-defined frequency to conduct backups consistent with recovery time and recovery point objectives.
<VulnDiscussion>Operating system backup is a critical step in maintaining data assurance and availability. User-level information is data g...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The operating system must conduct backups of system-level information contained in the information system per organization-defined frequency to conduct backups that are consistent with recovery time and recovery point objectives.
<VulnDiscussion>Operating system backup is a critical step in maintaining data assurance and availability. System-level information is data...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The operating system must conduct backups of operating system documentation including security-related documentation per organization-defined frequency to conduct backups that is consistent with recovery time and recovery point objectives.
<VulnDiscussion>Operating system backup is a critical step in maintaining data assurance and availability. System documentation is data gen...Rule Medium Severity
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