SLES 12 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-OS-000423-GPOS-00187
<GroupDescription></GroupDescription>Group -
All networked SUSE operating systems must have and implement SSH to protect the confidentiality and integrity of transmitted and received information, as well as information during preparation for transmission.
<VulnDiscussion>Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected commu...Rule High Severity -
SRG-OS-000032-GPOS-00013
<GroupDescription></GroupDescription>Group -
The SUSE operating system 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 -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The SUSE operating system must display the date and time of the last successful account logon upon an SSH logon.
<VulnDiscussion>Providing users with feedback on when account accesses via SSH last occurred facilitates user recognition and reporting of un...Rule Medium Severity -
SRG-OS-000109-GPOS-00056
<GroupDescription></GroupDescription>Group -
The SUSE operating system must deny direct logons to the root account using remote access via SSH.
<VulnDiscussion>To assure individual accountability and prevent unauthorized access, organizational users must be individually identified and...Rule Medium Severity -
SRG-OS-000480-GPOS-00229
<GroupDescription></GroupDescription>Group -
The SUSE operating system must not allow automatic logon via SSH.
<VulnDiscussion>Failure to restrict system access via SSH to authenticated users negatively impacts SUSE operating system security.</VulnD...Rule High Severity -
SRG-OS-000480-GPOS-00229
<GroupDescription></GroupDescription>Group -
The SUSE operating system must not allow users to override SSH environment variables.
<VulnDiscussion>SSH environment options potentially allow users to bypass access restriction in some configurations.</VulnDiscussion>&l...Rule Medium Severity -
SRG-OS-000033-GPOS-00014
<GroupDescription></GroupDescription>Group -
The SUSE operating system 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 Medium Severity -
SRG-OS-000125-GPOS-00065
<GroupDescription></GroupDescription>Group -
The SUSE operating system SSH daemon must be configured to only use Message Authentication Codes (MACs) employing FIPS 140-2 approved cryptographic hash algorithms.
<VulnDiscussion>Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote acce...Rule Medium Severity -
SRG-OS-000126-GPOS-00066
<GroupDescription></GroupDescription>Group -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The SUSE operating system SSH daemon must be configured with a timeout interval.
<VulnDiscussion>Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take c...Rule Medium Severity -
SRG-OS-000163-GPOS-00072
<GroupDescription></GroupDescription>Group
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