ACLs for event logs will conform to minimum requirements.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-1077	2.001	SV-15087r1_rule	ECTP-1	Medium

Description
Event logs are susceptible to unauthorized, and possibly anonymous, tampering if proper ACLs are not applied.

STIG	Date
Windows Vista Security Technical Implementation Guide	2013-10-01

Details

Check Text ( C-12394r1_chk )
Verify the permissions on the event logs (application.evtx, security.evtx, and system.evtx) are set to the following: Account Assignment - Permission Administrators - Read and Execute "Auditors" group - Full SYSTEM - Full Eventlog - Full By default, all are found in the “%SystemRoot%\SYSTEM32\WINEVT\LOGS” directory. They may have been moved to another folder. Note: See V-1137 for the auditors group requirement. Automated tools may report an auditors group as a finding as the name of the group is left to the sites. If an auditors group is present, its presence does not constitute a finding. If the permissions for these files are not as restrictive as the ACLs listed, this is a finding.

Check Text ( C-12394r1_chk )

Verify the permissions on the event logs (application.evtx, security.evtx, and system.evtx) are set to the following:

Account Assignment - Permission
Administrators - Read and Execute
"Auditors" group - Full
SYSTEM - Full
Eventlog - Full

By default, all are found in the “%SystemRoot%\SYSTEM32\WINEVT\LOGS” directory. They may have been moved to another folder.

Note: See V-1137 for the auditors group requirement.

Automated tools may report an auditors group as a finding as the name of the group is left to the sites. If an auditors group is present, its presence does not constitute a finding.

If the permissions for these files are not as restrictive as the ACLs listed, this is a finding.

Fix Text (F-33756r1_fix)
Set the ACL permissions on the event logs as defined in the manual check. If the location of the logs has been changed, when adding Eventlog to the permissions it must be entered as “NT Service\Eventlog”.