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The SLES for vRealize audit system must be configured to audit user deletions of files and programs.


Overview

Finding ID Version Rule ID IA Controls Severity
V-239636 VROM-SL-001435 SV-239636r662359_rule Medium
Description
Auditing file deletions will create an audit trail for files that are removed from the system. The audit trail could aid in system troubleshooting, as well as detecting malicious processes that attempt to delete log files to conceal their presence.
STIG Date
VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide 2021-07-01

Details

Check Text ( C-42869r662357_chk )
To determine if SLES for vRealize is configured to audit calls to the "unlink" system call, run the following command:

# auditctl -l | grep syscall | grep unlink | grep -v unlinkat

If the system is configured to audit this activity, it will return several lines. To determine if the system is configured to audit calls to the "unlinkat" system call, run the following command:

# auditctl -l | grep syscall | grep unlinkat

If the system is configured to audit this activity, it will return several lines. To determine if the system is configured to audit calls to the "rename" system call, run the following command:

# auditctl -l | grep syscall | grep rename | grep -v renameat

If the system is configured to audit this activity, it will return several lines. To determine if the system is configured to audit calls to the "renameat" system call, run the following command:

# auditctl -l | grep syscall | grep renameat

If the system is configured to audit this activity, it will return several lines. If no line is returned, this is a finding.
Fix Text (F-42828r662358_fix)
Edit the audit.rules file and add the following line(s) to enable auditing of deletions of files and programs:

-a always,exit -F arch=b64 -S unlink -S unlinkat -S rename -S renameat -F auid=0
-a always,exit -F arch=b64 -S unlink -S unlinkat -S rename -S renameat -F auid>=500 -F auid!=4294967295
-a always,exit -F arch=b32 -S unlink -S unlinkat -S rename -S renameat -F auid=0
-a always,exit -F arch=b32 -S unlink -S unlinkat -S rename -S renameat -F auid>=500 -F auid!=4294967295