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SLES 12 Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000073-GPOS-00041

    <GroupDescription></GroupDescription>
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  • The SUSE operating system must employ FIPS 140-2-approved cryptographic hashing algorithms for all stored passwords.

    &lt;VulnDiscussion&gt;The system must use a strong hashing algorithm to store the password. The system must use a sufficient number of hashing roun...
    Rule Medium Severity
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  • SRG-OS-000078-GPOS-00046

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  • The SUSE operating system must employ passwords with a minimum of 15 characters.

    &lt;VulnDiscussion&gt;The shorter the password, the lower the number of possible combinations that need to be tested before the password is comprom...
    Rule Medium Severity
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  • SRG-OS-000075-GPOS-00043

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  • FIPS 140-2 mode must be enabled on the SUSE operating system.

    &lt;VulnDiscussion&gt;Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The SUSE operating...
    Rule Medium Severity
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  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
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  • The SUSE operating system must be configured to create or update passwords with a minimum lifetime of 24 hours (one day).

    &lt;VulnDiscussion&gt;Enforcing a minimum password lifetime helps prevent repeated password changes to defeat the password reuse or history enforce...
    Rule Medium Severity
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  • SRG-OS-000075-GPOS-00043

    <GroupDescription></GroupDescription>
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  • The SUSE operating system must employ user passwords with a minimum lifetime of 24 hours (one day).

    &lt;VulnDiscussion&gt;Enforcing a minimum password lifetime helps prevent repeated password changes to defeat the password reuse or history enforce...
    Rule Medium Severity
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  • SRG-OS-000076-GPOS-00044

    <GroupDescription></GroupDescription>
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  • The SUSE operating system must be configured to create or update passwords with a maximum lifetime of 60 days.

    &lt;VulnDiscussion&gt;Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the ...
    Rule Medium Severity
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  • SRG-OS-000076-GPOS-00044

    <GroupDescription></GroupDescription>
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  • The SUSE operating system must employ user passwords with a maximum lifetime of 60 days.

    &lt;VulnDiscussion&gt;Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the ...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00225

    <GroupDescription></GroupDescription>
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  • The SUSE operating system must prevent the use of dictionary words for passwords.

    &lt;VulnDiscussion&gt;If the SUSE operating system allows the user to select passwords based on dictionary words, this increases the chances of pas...
    Rule Medium Severity
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  • SRG-OS-000123-GPOS-00064

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  • The SUSE operating system must never automatically remove or disable emergency administrator accounts.

    &lt;VulnDiscussion&gt;Emergency accounts are privileged accounts that are established in response to crisis situations where the need for rapid acc...
    Rule Medium Severity
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  • SRG-OS-000118-GPOS-00060

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  • The SUSE operating system must disable account identifiers (individuals, groups, roles, and devices) after 35 days of inactivity after password expiration.

    &lt;VulnDiscussion&gt;Inactive identifiers pose a risk to systems and applications because attackers may exploit an inactive identifier and potenti...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00226

    <GroupDescription></GroupDescription>
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  • The SUSE operating system must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.

    &lt;VulnDiscussion&gt;Limiting the number of logon attempts over a certain time interval reduces the chances that an unauthorized user may gain acc...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
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  • The SUSE operating system must not allow unattended or automatic logon via the graphical user interface.

    &lt;VulnDiscussion&gt;Failure to restrict system access to authenticated users negatively impacts SUSE operating system security.&lt;/VulnDiscussio...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SUSE operating system must display the date and time of the last successful account logon upon logon.

    &lt;VulnDiscussion&gt;Providing users with feedback on when account accesses last occurred facilitates user recognition and reporting of unauthoriz...
    Rule Low Severity
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  • SRG-OS-000480-GPOS-00227

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  • There must be no .shosts files on the SUSE operating system.

    &lt;VulnDiscussion&gt;The .shosts files are used to configure host-based authentication for individual users or the system via SSH. Host-based auth...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

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  • There must be no shosts.equiv files on the SUSE operating system.

    &lt;VulnDiscussion&gt;The shosts.equiv files are used to configure host-based authentication for the system via SSH. Host-based authentication is n...
    Rule High Severity
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  • SUSE operating systems with a basic input/output system (BIOS) must require authentication upon booting into single-user and maintenance modes.

    &lt;VulnDiscussion&gt;To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...
    Rule Medium Severity
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  • SRG-OS-000080-GPOS-00048

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  • SUSE operating systems with Unified Extensible Firmware Interface (UEFI) implemented must require authentication upon booting into single-user mode and maintenance.

    &lt;VulnDiscussion&gt;If the system allows a user to boot into single-user or maintenance mode without authentication, any user that invokes single...
    Rule Medium Severity
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  • SRG-OS-000185-GPOS-00079

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  • All SUSE operating system persistent disk partitions must implement cryptographic mechanisms to prevent unauthorized disclosure or modification of all information that requires at rest protection.

    &lt;VulnDiscussion&gt;SUSE operating systems handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent una...
    Rule High Severity
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  • SRG-OS-000138-GPOS-00069

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  • The sticky bit must be set on all SUSE operating system world-writable directories.

    &lt;VulnDiscussion&gt;Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of infor...
    Rule Medium Severity
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  • SRG-OS-000363-GPOS-00150

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  • Advanced Intrusion Detection Environment (AIDE) must verify the baseline SUSE operating system configuration at least weekly.

    &lt;VulnDiscussion&gt;Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized ...
    Rule Medium Severity
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  • The SUSE operating system must notify the System Administrator (SA) when AIDE discovers anomalies in the operation of any security functions.

    &lt;VulnDiscussion&gt;If anomalies are not acted on, security functions may fail to secure the system. Security function is defined as the hardwa...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SUSE operating system file integrity tool must be configured to verify Access Control Lists (ACLs).

    &lt;VulnDiscussion&gt;ACLs can provide permissions beyond those permitted through the file mode and must be verified by file integrity tools.&lt;/V...
    Rule Low Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SUSE operating system file integrity tool must be configured to verify extended attributes.

    &lt;VulnDiscussion&gt;Extended attributes in file systems are used to contain arbitrary data and file metadata with security implications.&lt;/Vuln...
    Rule Low Severity
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  • SRG-OS-000278-GPOS-00108

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  • The SUSE operating system file integrity tool must be configured to protect the integrity of the audit tools.

    &lt;VulnDiscussion&gt;Protecting the integrity of the tools used for auditing purposes is a critical step toward ensuring the integrity of audit in...
    Rule Medium Severity
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  • SRG-OS-000366-GPOS-00153

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  • The SUSE operating system tool zypper must have gpgcheck enabled.

    &lt;VulnDiscussion&gt;Changes to any software components can have significant effects on the overall security of the SUSE operating system. This re...
    Rule Medium Severity
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  • SRG-OS-000437-GPOS-00194

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  • The SUSE operating system must remove all outdated software components after updated versions have been installed.

    &lt;VulnDiscussion&gt;Previous versions of software components that are not removed from the information system after updates have been installed m...
    Rule Medium Severity
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