SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SLEM 5 must have SSH installed to protect the confidentiality and integrity of transmitted information.
Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. This requirem...Rule High Severity -
SLEM 5 must use SSH to protect the confidentiality and integrity of transmitted information.
Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. This requireme...Rule High Severity -
SLEM 5 must be configured so that all network connections associated with SSH traffic terminate after becoming unresponsive.
Terminating an unresponsive SSH 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 con...Rule Medium Severity -
SLEM 5 SSH daemon must disable forwarded remote X connections for interactive users, unless to fulfill documented and validated mission requirements.
The security risk of using X11 forwarding is that the client's X11 display server may be exposed to attack when the SSH client requests forwarding. A system administrator may have a stance in which...Rule Medium Severity -
SLEM 5 SSH daemon must be configured to only use Message Authentication Codes (MACs) employing FIPS 140-2/140-3 approved cryptographic hash algorithms.
Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote access (e.g., RDP) is access to DOD nonpublic information systems by an auth...Rule High Severity -
SLEM 5 must log SSH connection attempts and failures to the server.
Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access man...Rule Medium Severity -
SLEM 5, for PKI-based authentication, must enforce authorized access to the corresponding private key.
If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the network infrastructure. The cornerstone of the PKI is the private key use...Rule Medium Severity -
There must be no shosts.equiv files on SLEM 5.
The shosts.equiv files are used to configure host-based authentication for the system via SSH. Host-based authentication is not sufficient for preventing unauthorized access to the system, as it do...Rule High Severity -
SLEM 5 wireless network adapters must be disabled unless approved and documented.
Without protection of communications with wireless peripherals, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read, altered, or u...Rule Medium Severity -
All SLEM 5 local interactive user home directories defined in the /etc/passwd file must exist.
If a local interactive user has a home directory defined that does not exist, the user may be given access to the / directory as the current working directory upon logon. This could create a denial...Rule Medium Severity
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