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Fix auditd_audispd_encrypt_sent_records on Fedora and RHEL8 #3619

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Merged
yuumasato merged 3 commits into from
Dec 3, 2018
Merged

Fix auditd_audispd_encrypt_sent_records on Fedora and RHEL8 #3619

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ffd88dd
Fix auditd_audispd_encrypt_sent_records on Fedora and RHEL8
jan-cerny Nov 14, 2018
bbe9734
Change the rule description in auditd_audispd_encrypt_sent_records
jan-cerny Nov 26, 2018
43ad827
Add test scenarios for RHEL8/Fedora
jan-cerny Nov 28, 2018
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12 changes: 9 additions & 3 deletions ...diting/configure_auditd_data_retention/auditd_audispd_encrypt_sent_records/bash/shared.sh
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@@ -1,8 +1,14 @@
# platform = multi_platform_all
. /usr/share/scap-security-guide/remediation_functions

var_enable_krb5="yes"

{{% if product in ["rhel8", "fedora"] %}}
AUDISP_REMOTE_CONFIG="/etc/audit/audisp-remote.conf"
option="^transport"
value="KRB5"
{{% else %}}
AUDISP_REMOTE_CONFIG="/etc/audisp/audisp-remote.conf"
option="^enable_krb5"
value="yes"
{{% endif %}}

replace_or_append $AUDISP_REMOTE_CONFIG '^enable_krb5' "$var_enable_krb5" "@CCENUM@"
replace_or_append $AUDISP_REMOTE_CONFIG "$option" "$value" "@CCENUM@"
16 changes: 14 additions & 2 deletions ...iting/configure_auditd_data_retention/auditd_audispd_encrypt_sent_records/oval/shared.xml
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Expand Up @@ -5,24 +5,36 @@
<affected family="unix">
<platform>multi_platform_all</platform>
</affected>
{{% if product in ["rhel8", "fedora"] %}}
<description>transport setting in /etc/audit/audisp-remote.conf is set to 'KRB5'</description>
{{% else %}}
<description>enable_krb5 setting in /etc/audisp/audisp-remote.conf is set to 'yes'</description>
{{% endif %}}
</metadata>

<criteria>
<criterion comment="enable_krb5 setting in audisp-remote.conf" test_ref="test_auditd_audispd_encrypt_sent_records" />
<criterion comment="setting in audisp-remote.conf" test_ref="test_auditd_audispd_encrypt_sent_records" />
</criteria>

</definition>

<ind:textfilecontent54_test check="all" comment="enable_krb5 setting in audisp-remote.conf" id="test_auditd_audispd_encrypt_sent_records" version="1">
<ind:textfilecontent54_test check="all" comment="setting in audisp-remote.conf" id="test_auditd_audispd_encrypt_sent_records" version="1">
<ind:object object_ref="object_auditd_audispd_encrypt_sent_records" />
</ind:textfilecontent54_test>

<ind:textfilecontent54_object id="object_auditd_audispd_encrypt_sent_records" version="1">
{{% if product in ["rhel8", "fedora"] %}}
<ind:filepath>/etc/audit/audisp-remote.conf</ind:filepath>
{{% else %}}
<ind:filepath>/etc/audisp/audisp-remote.conf</ind:filepath>
{{% endif %}}
<!-- Allow only space (exactly) as delimiter -->
<!-- Require at least one space before and after the equal sign -->
{{% if product in ["rhel8", "fedora"] %}}
<ind:pattern operation="pattern match">^[ ]*transport[ ]+=[ ]+KRB5[ ]*$</ind:pattern>
{{% else %}}
<ind:pattern operation="pattern match">^[ ]*enable_krb5[ ]+=[ ]+yes[ ]*$</ind:pattern>
{{% endif %}}
<ind:instance datatype="int">1</ind:instance>
</ind:textfilecontent54_object>

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11 changes: 11 additions & 0 deletions ...tem/auditing/configure_auditd_data_retention/auditd_audispd_encrypt_sent_records/rule.yml
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Expand Up @@ -7,9 +7,14 @@ title: 'Encrypt Audit Records Sent With audispd Plugin'
description: |-
Configure the operating system to encrypt the transfer of off-loaded audit
records onto a different system or media from the system being audited.
{{% if product in ["rhel8", "fedora"] %}}
Set the <tt>transport</tt> option in <pre>/etc/audit/audisp-remote.conf</pre>
to <tt>KRB5</tt>.
{{% else %}}
Uncomment the <tt>enable_krb5</tt> option in <pre>/etc/audisp/audisp-remote.conf</pre>,
and set it with the following line:
<pre>enable_krb5 = yes</pre>
{{% endif %}}

rationale: |-
Information stored in one location is vulnerable to accidental or incidental deletion
Expand All @@ -31,8 +36,14 @@ ocil_clause: 'audispd is not encrypting audit records when sent over the network
ocil: |-
To verify the audispd plugin encrypts audit records off-loaded onto a different
system or media from the system being audited, run the following command:
{{% if product in ["rhel8", "fedora"] %}}
<pre>$ sudo grep -i transport /etc/audit/audisp-remote.conf</pre>
The output should return the following:
<pre>transport = KRB5</pre>
{{% else %}}
<pre>$ sudo grep -i enable_krb5 /etc/audisp/audisp-remote.conf</pre>
The output should return the following:
<pre>enable_krb5 = yes</pre>
{{% endif %}}

platform: machine
3 changes: 2 additions & 1 deletion ...ditd_data_retention/rule_auditd_audispd_encrypt_sent_records/encrypt_sent_records.pass.sh
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@@ -1,5 +1,6 @@
#!/bin/bash
# profiles = xccdf_org.ssgproject.content_profile_stig-rhel7-disa, xccdf_org.ssgproject.content_profile_ospp
# platform = Red Hat Enterprise Linux 7
# profiles = xccdf_org.ssgproject.content_profile_stig-rhel7-disa

. ../../auditd_utils.sh
prepare_auditd_test_enviroment
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3 changes: 2 additions & 1 deletion ...ntion/rule_auditd_audispd_encrypt_sent_records/encrypt_sent_records_not_activated.fail.sh
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#!/bin/bash
# profiles = xccdf_org.ssgproject.content_profile_stig-rhel7-disa, xccdf_org.ssgproject.content_profile_ospp
# platform = Red Hat Enterprise Linux 7
# profiles = xccdf_org.ssgproject.content_profile_stig-rhel7-disa

. ../../auditd_utils.sh
prepare_auditd_test_enviroment
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3 changes: 2 additions & 1 deletion ...retention/rule_auditd_audispd_encrypt_sent_records/encrypt_sent_records_not_there.fail.sh
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#!/bin/bash
# profiles = xccdf_org.ssgproject.content_profile_stig-rhel7-disa, xccdf_org.ssgproject.content_profile_ospp
# platform = Red Hat Enterprise Linux 7
# profiles = xccdf_org.ssgproject.content_profile_stig-rhel7-disa

. ../../auditd_utils.sh
prepare_auditd_test_enviroment
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7 changes: 7 additions & 0 deletions ...itd_data_retention/rule_auditd_audispd_encrypt_sent_records/transport_bogus_value.fail.sh
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#!/bin/bash
# platform = Red Hat Enterprise Linux 8, multi_platform_fedora
# profiles = xccdf_org.ssgproject.content_profile_ospp

. ../../auditd_utils.sh
prepare_auditd_test_enviroment
set_parameters_value /etc/audit/audisp-remote.conf "transport" "BOGUS"
7 changes: 7 additions & 0 deletions ...d_data_retention/rule_auditd_audispd_encrypt_sent_records/transport_correct_value.pass.sh
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#!/bin/bash
# platform = Red Hat Enterprise Linux 8, multi_platform_fedora
# profiles = xccdf_org.ssgproject.content_profile_ospp

. ../../auditd_utils.sh
prepare_auditd_test_enviroment
set_parameters_value /etc/audit/audisp-remote.conf "transport" "KRB5"
7 changes: 7 additions & 0 deletions ...uditd_data_retention/rule_auditd_audispd_encrypt_sent_records/transport_not_there.fail.sh
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#!/bin/bash
# platform = Red Hat Enterprise Linux 8, multi_platform_fedora
# profiles = xccdf_org.ssgproject.content_profile_ospp

. ../../auditd_utils.sh
prepare_auditd_test_enviroment
delete_parameter /etc/audit/audisp-remote.conf "transport"
7 changes: 7 additions & 0 deletions ...itd_data_retention/rule_auditd_audispd_encrypt_sent_records/transport_wrong_value.fail.sh
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#!/bin/bash
# platform = Red Hat Enterprise Linux 8, multi_platform_fedora
# profiles = xccdf_org.ssgproject.content_profile_ospp

. ../../auditd_utils.sh
prepare_auditd_test_enviroment
set_parameters_value /etc/audit/audisp-remote.conf "transport" "TCP"