The SLES for vRealize audit system must be configured to audit failed attempts to access files and programs.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-240534	VRAU-SL-001440	SV-240534r671343_rule		Medium

Description
Unsuccessful attempts to access files could be an indicator of malicious activity on a system. Auditing these events could serve as evidence of potential system compromise.

STIG	Date
VMware vRealize Automation 7.x SLES Security Technical Implementation Guide	2021-06-24

Details

Check Text ( C-43767r671341_chk )
Verify auditd is configured to audit failed file access attempts. There must be both an "-F exit=-EPERM" and "-F exit=-EACCES" for each access syscall: # cat /etc/audit.rules /etc/audit/audit.rules \| grep -e "-a exit,always" \| grep -e "-S open" \| grep -e "-F exit=-EPERM" # cat /etc/audit.rules /etc/audit/audit.rules \| grep -e "-a exit,always" \| grep -e "-S open" \| grep -e "-F exit=-EACCES" There must be both an "-F exit=-EPERM" and "-F exit=-EACCES" for each access syscall. If not, this is a finding.

Check Text ( C-43767r671341_chk )

Verify auditd is configured to audit failed file access attempts. There must be both an "-F exit=-EPERM" and "-F exit=-EACCES" for each access syscall:

# cat /etc/audit.rules /etc/audit/audit.rules | grep -e "-a exit,always" | grep -e "-S open" | grep -e "-F exit=-EPERM"

# cat /etc/audit.rules /etc/audit/audit.rules | grep -e "-a exit,always" | grep -e "-S open" | grep -e "-F exit=-EACCES"

There must be both an "-F exit=-EPERM" and "-F exit=-EACCES" for each access syscall.

If not, this is a finding.

Fix Text (F-43726r671342_fix)
Edit the audit.rules file and add the following line(s) to enable auditing of failed attempts to access files and programs: -a exit,always -F arch=b64 -S open -F exit=-EPERM -a exit,always -F arch=b64 -S open -F exit=-EACCES -a exit,always -F arch=b32 -S open -F exit=-EPERM -a exit,always -F arch=b32 -S open -F exit=-EACCES