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UBTU-16-020470 - The audit system must be configured to audit any usage of the lsetxattr system call - root b64

Information

Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000458-GPOS-00203, SRG-OS-000462-GPOS-00206, SRG-OS-000463-GPOS-00207, SRG-OS-000471-GPOS-00215, SRG-OS-000474-GPOS-00219

Solution

Configure the Ubuntu operating system to audit the execution of the 'lsetxattr' system call, by adding the following lines to '/etc/audit/audit.rules':

-a always,exit -F arch=b32 -S lsetxattr -F auid>=1000 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S lsetxattr -F auid>=1000 -F auid!=4294967295 -k perm_mod

-a always,exit -F arch=b32 -S lsetxattr -F auid=0 -k perm_mod
-a always,exit -F arch=b64 -S lsetxattr -F auid=0 -k perm_mod

The audit daemon must be restarted for the changes to take effect. To restart the audit daemon, run the following command:

# sudo systemctl restart auditd.service

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_CAN_Ubuntu_16-04_LTS_V2R3_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY, MAINTENANCE

References: 800-53|AU-3, 800-53|AU-3(1), 800-53|AU-12a., 800-53|AU-12c., 800-53|MA-4(1)(a), CAT|II, CCI|CCI-000130, CCI|CCI-000135, CCI|CCI-000169, CCI|CCI-000172, CCI|CCI-002884, Rule-ID|SV-215069r610931_rule, STIG-ID|UBTU-16-020470, STIG-Legacy|SV-90399, STIG-Legacy|V-75719, Vuln-ID|V-215069

Plugin: Unix

Control ID: edcfbb30d49710de13b323fd1140fd343e544ce9d8fc2439d47dfe50381bcaf6