Finding ID | Version | Rule ID | IA Controls | Severity |
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V-38540 | RHEL-06-000182 | SV-50341r4_rule | Low |
Description |
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The network environment should not be modified by anything other than administrator action. Any change to network parameters should be audited. |
STIG | Date |
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Red Hat Enterprise Linux 6 Security Technical Implementation Guide | 2018-09-18 |
Check Text ( C-46098r4_chk ) |
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If you are running x86_64 architecture, determine the values for sethostname: $ uname -m; ausyscall i386 sethostname; ausyscall x86_64 sethostname If the values returned are not identical verify that the system is configured to monitor network configuration changes for the i386 and x86_64 architectures: $ sudo egrep -w '(sethostname|setdomainname|/etc/issue|/etc/issue.net|/etc/hosts|/etc/sysconfig/network)' /etc/audit/audit.rules -a always,exit -F arch=b32 -S sethostname -S setdomainname -k audit_network_modifications -w /etc/issue -p wa -k audit_network_modifications -w /etc/issue.net -p wa -k audit_network_modifications -w /etc/hosts -p wa -k audit_network_modifications -w /etc/sysconfig/network -p wa -k audit_network_modifications -a always,exit -F arch=b64 -S sethostname -S setdomainname -k audit_network_modifications -w /etc/issue -p wa -k audit_network_modifications -w /etc/issue.net -p wa -k audit_network_modifications -w /etc/hosts -p wa -k audit_network_modifications -w /etc/sysconfig/network -p wa -k audit_network_modifications If the system is configured to watch for network configuration changes, a line should be returned for each file specified for both (and "-p wa" should be indicated for each). If the system is not configured to audit changes of the network configuration, this is a finding. |
Fix Text (F-43488r2_fix) |
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Add the following to "/etc/audit/audit.rules", setting ARCH to either b32 or b64 as appropriate for your system: # audit_network_modifications -a always,exit -F arch=ARCH -S sethostname -S setdomainname -k audit_network_modifications -w /etc/issue -p wa -k audit_network_modifications -w /etc/issue.net -p wa -k audit_network_modifications -w /etc/hosts -p wa -k audit_network_modifications -w /etc/sysconfig/network -p wa -k audit_network_modifications |