No profile (default benchmark)
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must not forward Internet Protocol version 4 (IPv4) source-routed packets by default.
<VulnDiscussion>Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than c...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must prevent Internet Protocol version 4 (IPv4) Internet Control Message Protocol (ICMP) redirect messages from being accepted.
<VulnDiscussion>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. Thes...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must not allow interfaces to accept Internet Protocol version 4 (IPv4) Internet Control Message Protocol (ICMP) redirect messages by default.
<VulnDiscussion>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. Thes...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must not send Internet Protocol version 4 (IPv4) Internet Control Message Protocol (ICMP) redirects.
<VulnDiscussion>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. Thes...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must not allow interfaces to send Internet Protocol version 4 (IPv4) Internet Control Message Protocol (ICMP) redirect messages by default.
<VulnDiscussion>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. Thes...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must not be performing Internet Protocol version 4 (IPv4) packet forwarding unless the system is a router.
<VulnDiscussion>Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this s...Rule Medium Severity -
SRG-OS-000142-GPOS-00071
<GroupDescription></GroupDescription>Group -
SLEM 5 must be configured to use TCP syncookies.
<VulnDiscussion>Denial of service (DoS) is a condition in which a resource is not available for legitimate users. When this occurs, the organ...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must not forward Internet Protocol version 6 (IPv6) source-routed packets.
<VulnDiscussion>Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than c...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must not forward Internet Protocol version 6 (IPv6) source-routed packets by default.
<VulnDiscussion>Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than c...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must prevent Internet Protocol version 6 (IPv6) Internet Control Message Protocol (ICMP) redirect messages from being accepted.
<VulnDiscussion>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. Thes...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must not allow interfaces to accept Internet Protocol version 6 (IPv6) Internet Control Message Protocol (ICMP) redirect messages by default.
<VulnDiscussion>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. Thes...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must not be performing Internet Protocol version 6 (IPv6) packet forwarding unless the system is a router.
<VulnDiscussion>Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this s...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 must not be performing Internet Protocol version 6 (IPv6) packet forwarding by default unless the system is a router.
<VulnDiscussion>Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this s...Rule Medium Severity -
SRG-OS-000423-GPOS-00187
<GroupDescription></GroupDescription>Group -
SLEM 5 must have SSH installed to protect the confidentiality and integrity of transmitted information.
<VulnDiscussion>Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected commu...Rule High Severity -
SRG-OS-000423-GPOS-00187
<GroupDescription></GroupDescription>Group -
SLEM 5 must use SSH to protect the confidentiality and integrity of transmitted information.
<VulnDiscussion>Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected commu...Rule High Severity -
SRG-OS-000023-GPOS-00006
<GroupDescription></GroupDescription>Group -
SLEM 5 must display the Standard Mandatory DOD Notice and Consent Banner before granting access via SSH.
<VulnDiscussion>Display of a standardized and approved use notification before granting access to SLEM 5 ensures privacy and security notific...Rule Medium Severity -
SRG-OS-000480-GPOS-00229
<GroupDescription></GroupDescription>Group -
SLEM 5 must not allow unattended or automatic logon via SSH.
<VulnDiscussion>Failure to restrict system access via SSH to authenticated users negatively impacts SLEM 5 security.</VulnDiscussion>&l...Rule High Severity -
SRG-OS-000163-GPOS-00072
<GroupDescription></GroupDescription>Group -
SLEM 5 must be configured so that all network connections associated with SSH traffic terminate after becoming unresponsive.
<VulnDiscussion>Terminating an unresponsive SSH session within a short time period reduces the window of opportunity for unauthorized personn...Rule Medium Severity -
SRG-OS-000126-GPOS-00066
<GroupDescription></GroupDescription>Group -
SLEM 5 must be configured so that all network connections associated with SSH traffic are terminated after 10 minutes of becoming unresponsive.
<VulnDiscussion>Terminating an unresponsive SSH session within a short time period reduces the window of opportunity for unauthorized personn...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
SLEM 5 SSH daemon must disable forwarded remote X connections for interactive users, unless to fulfill documented and validated mission requirements.
<VulnDiscussion>The security risk of using X11 forwarding is that the client's X11 display server may be exposed to attack when the SSH clien...Rule Medium Severity -
SRG-OS-000033-GPOS-00014
<GroupDescription></GroupDescription>Group -
SLEM 5 must implement DOD-approved encryption to protect the confidentiality of SSH remote connections.
<VulnDiscussion>Without confidentiality protection mechanisms, unauthorized individuals may gain access to sensitive information via a remote...Rule High Severity -
SRG-OS-000125-GPOS-00065
<GroupDescription></GroupDescription>Group -
SLEM 5 SSH daemon must be configured to only use Message Authentication Codes (MACs) employing FIPS 140-2/140-3 approved cryptographic hash algorithms.
<VulnDiscussion>Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote acce...Rule High Severity -
SRG-OS-000250-GPOS-00093
<GroupDescription></GroupDescription>Group -
SLEM 5 SSH server must be configured to use only FIPS 140-2/140-3 validated key exchange algorithms.
<VulnDiscussion>Without cryptographic integrity protections provided by FIPS 140-2/140-3 validated cryptographic algorithms, information can ...Rule High Severity -
SRG-OS-000109-GPOS-00056
<GroupDescription></GroupDescription>Group -
SLEM 5 must deny direct logons to the root account using remote access via SSH.
<VulnDiscussion>To ensure individual accountability and prevent unauthorized access, organizational users must be individually identified and...Rule Medium Severity -
SRG-OS-000032-GPOS-00013
<GroupDescription></GroupDescription>Group -
SLEM 5 must log SSH connection attempts and failures to the server.
<VulnDiscussion>Remote access services, such as those providing remote access to network devices and information systems, which lack automate...Rule Medium Severity
Node 2
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