II - Mission Support Classified
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000004-GPOS-00004
Group -
The Oracle Linux operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/security/opasswd.
Without generating audit records specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or...Rule Medium Severity -
SRG-OS-000466-GPOS-00210
Group -
The Oracle Linux operating system must audit all uses of the unlink, unlinkat, rename, renameat, and rmdir syscalls.
If the system is not configured to audit certain activities and write them to an audit log, it is more difficult to detect and track system compromises and damages incurred during a system compromi...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
Group -
The Oracle Linux operating system must send rsyslog output to a log aggregation server.
Sending rsyslog output to another system ensures that the logs cannot be removed or modified in the event that the system is compromised or has a hardware failure.Rule Medium Severity -
SRG-OS-000480-GPOS-00227
Group -
The Oracle Linux operating system must be configured so that the rsyslog daemon does not accept log messages from other servers unless the server is being used for log aggregation.
Unintentionally running a rsyslog server accepting remote messages puts the system at increased risk. Malicious rsyslog messages sent to the server could exploit vulnerabilities in the server softw...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
Group -
The Oracle Linux operating system must use a virus scan program.
Virus scanning software can be used to protect a system from penetration from computer viruses and to limit their spread through intermediate systems. The virus scanning software should be configu...Rule High Severity -
SRG-OS-000027-GPOS-00008
Group -
The Oracle Linux operating system must limit the number of concurrent sessions to 10 for all accounts and/or account types.
Operating system management includes the ability to control the number of users and user sessions that utilize an operating system. Limiting the number of allowed users and sessions per user is hel...Rule Low Severity -
SRG-OS-000096-GPOS-00050
Group -
The Oracle Linux operating system must be configured to prohibit or restrict the use of functions, ports, protocols, and/or services, as defined in the Ports, Protocols, and Services Management Component Local Service Assessment (PPSM CLSA) and vulnerability assessments.
In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must disable...Rule Medium Severity -
SRG-OS-000033-GPOS-00014
Group -
The Oracle Linux 7 operating system must implement DoD-approved encryption to protect the confidentiality of SSH connections.
Unapproved mechanisms for authentication to the cryptographic module are not verified, and therefore cannot be relied upon to provide confidentiality or integrity, resulting in the compromise of Do...Rule Medium Severity -
SRG-OS-000163-GPOS-00072
Group -
The Oracle Linux operating system must be configured so that all network connections associated with a communication session are terminated at the end of the session or after 15 minutes of inactivity from the user at a command prompt, except to fulfill documented and validated mission requirements.
Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port th...Rule Medium Severity -
SRG-OS-000023-GPOS-00006
Group -
The Oracle Linux operating system must display the Standard Mandatory DoD Notice and Consent Banner immediately prior to, or as part of, remote access logon prompts.
Display of a standardized and approved use notification before granting access to the publicly accessible operating system ensures privacy and security notification verbiage used is consistent with...Rule Medium Severity
Node 2
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