The Oracle Linux operating system must take appropriate action when the remote logging buffer is full.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-221768	OL07-00-030210	SV-221768r877390_rule		Medium

Description
Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity. One method of off-loading audit logs in Oracle Linux is with the use of the audisp-remote dameon. When the remote buffer is full, audit logs will not be collected and sent to the central log server. Satisfies: SRG-OS-000342-GPOS-00133, SRG-OS-000479-GPOS-00224

Description

Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity. One method of off-loading audit logs in Oracle Linux is with the use of the audisp-remote dameon. When the remote buffer is full, audit logs will not be collected and sent to the central log server. Satisfies: SRG-OS-000342-GPOS-00133, SRG-OS-000479-GPOS-00224

STIG	Date
Oracle Linux 7 Security Technical Implementation Guide	2023-03-06

Details

Check Text ( C-36289r602461_chk )
Verify the audisp daemon is configured to take an appropriate action when the internal queue is full: # grep "overflow_action" /etc/audisp/audispd.conf overflow_action = syslog If the "overflow_action" option is not "syslog", "single", or "halt", or the line is commented out, ask the System Administrator to indicate how the audit logs are off-loaded to a different system or storage media, and to indicate what action the system takes when the internal queue is full. If there is no evidence that the system is configured to off-load audit logs to a different system or storage media, or if the configuration does not take appropriate action when the internal queue is full, this is a finding.

Check Text ( C-36289r602461_chk )

Verify the audisp daemon is configured to take an appropriate action when the internal queue is full:

# grep "overflow_action" /etc/audisp/audispd.conf

overflow_action = syslog

If the "overflow_action" option is not "syslog", "single", or "halt", or the line is commented out, ask the System Administrator to indicate how the audit logs are off-loaded to a different system or storage media, and to indicate what action the system takes when the internal queue is full.

If there is no evidence that the system is configured to off-load audit logs to a different system or storage media, or if the configuration does not take appropriate action when the internal queue is full, this is a finding.

Fix Text (F-36253r602462_fix)
Edit the /etc/audisp/audispd.conf file and add or update the "overflow_action" option: overflow_action = syslog The audit daemon must be restarted for changes to take effect: # service auditd restart