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I - Mission Critical Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000076-GPOS-00044

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 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 SLEM...
    Rule Medium Severity
  • SRG-OS-000077-GPOS-00045

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must employ a password history file.

    &lt;VulnDiscussion&gt;Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...
    Rule Medium Severity
  • SRG-OS-000073-GPOS-00041

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must employ FIPS 140-2/140-3-approved cryptographic hashing algorithms for system authentication.

    &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 High Severity
  • SRG-OS-000073-GPOS-00041

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 shadow password suite must be configured to use a sufficient number of hashing rounds.

    &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 High Severity
  • SRG-OS-000120-GPOS-00061

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must employ FIPS 140-2/140-3 approved cryptographic hashing algorithm for system authentication (login.defs).

    &lt;VulnDiscussion&gt;Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be r...
    Rule Medium Severity
  • SRG-OS-000075-GPOS-00043

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 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
  • SRG-OS-000076-GPOS-00044

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 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 SLEM...
    Rule Medium Severity
  • SRG-OS-000375-GPOS-00160

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must have the packages required for multifactor authentication to be installed.

    &lt;VulnDiscussion&gt;Using an authentication device, such as a Common Access Card (CAC) or token separate from the information system, ensures tha...
    Rule Medium Severity
  • SRG-OS-000068-GPOS-00036

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must implement multifactor authentication for access to privileged accounts via pluggable authentication modules (PAM).

    &lt;VulnDiscussion&gt;Using an authentication device, such as a Common Access Card (CAC) or token that is separate from the information system, ens...
    Rule Medium Severity
  • SRG-OS-000375-GPOS-00160

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must implement certificate status checking for multifactor authentication.

    &lt;VulnDiscussion&gt;Using an authentication device, such as a Common Access Card (CAC) or token separate from the information system, ensures cre...
    Rule Medium Severity
  • SRG-OS-000383-GPOS-00166

    <GroupDescription></GroupDescription>
    Group
  • If Network Security Services (NSS) is being used by SLEM 5 it must prohibit the use of cached authentications after one day.

    &lt;VulnDiscussion&gt;If cached authentication information is out of date, the validity of the authentication information may be questionable.&lt;/...
    Rule Medium Severity
  • SRG-OS-000383-GPOS-00166

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must configure the Linux Pluggable Authentication Modules (PAM) to prohibit the use of cached offline authentications after one day.

    &lt;VulnDiscussion&gt;If cached authentication information is out of date, the validity of the authentication information may be questionable.&lt;/...
    Rule Medium Severity
  • SRG-OS-000066-GPOS-00034

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5, for PKI-based authentication, must validate certificates by constructing a certification path (which includes status information) to an accepted trust anchor.

    &lt;VulnDiscussion&gt;Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate n...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must be configured to not overwrite Pluggable Authentication Modules (PAM) configuration on package changes.

    &lt;VulnDiscussion&gt;The "pam-config" command line utility automatically generates a system PAM configuration as packages are installed, updated, ...
    Rule Medium Severity
  • SRG-OS-000363-GPOS-00150

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must use a file integrity tool to verify correct operation of all security functions.

    &lt;VulnDiscussion&gt;Without verification of the security functions, security functions may not operate correctly, and the failure may go unnotice...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 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 Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 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 Medium Severity
  • SRG-OS-000278-GPOS-00108

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 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
  • SRG-OS-000363-GPOS-00150

    <GroupDescription></GroupDescription>
    Group
  • Advanced Intrusion Detection Environment (AIDE) must verify the baseline SLEM 5 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
  • SRG-OS-000447-GPOS-00201

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must notify the system administrator (SA) when Advanced Intrusion Detection Environment (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 hardwar...
    Rule Medium Severity
  • SRG-OS-000479-GPOS-00224

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must offload rsyslog messages for networked systems in real time and offload standalone systems at least weekly.

    &lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Offloading is a common ...
    Rule Medium Severity
  • SRG-OS-000337-GPOS-00129

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must have the auditing package installed.

    &lt;VulnDiscussion&gt;Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it...
    Rule Medium Severity
  • SRG-OS-000037-GPOS-00015

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 audit records must contain information to establish what type of events occurred, the source of events, where events occurred, and the outcome of events.

    &lt;VulnDiscussion&gt;Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it...
    Rule Medium Severity
  • SRG-OS-000342-GPOS-00133

    <GroupDescription></GroupDescription>
    Group
  • The audit-audispd-plugins package must be installed on SLEM 5.

    &lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Offloading is a common ...
    Rule Medium Severity
  • SRG-OS-000341-GPOS-00132

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must allocate audit record storage capacity to store at least one week of audit records when audit records are not immediately sent to a central audit record storage facility.

    &lt;VulnDiscussion&gt;To ensure SLEM 5 has a sufficient storage capacity in which to write the audit logs, SLEM 5 must be able to allocate audit re...
    Rule Medium Severity

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