Security Token Service log files must only be modifiable by privileged users.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-239658	VCST-67-000007	SV-239658r816699_rule		Medium

Description
Log data is essential in the investigation of events. The accuracy of the information is always pertinent. One of the first steps an attacker will undertake is the modification or deletion of log records to cover tracks and prolong discovery. The web server must protect the log data from unauthorized modification. Security Token Service restricts all modification of log files by default, but this configuration must be verified. Satisfies: SRG-APP-000119-WSR-000069, SRG-APP-000120-WSR-000070

Description

Log data is essential in the investigation of events. The accuracy of the information is always pertinent. One of the first steps an attacker will undertake is the modification or deletion of log records to cover tracks and prolong discovery. The web server must protect the log data from unauthorized modification. Security Token Service restricts all modification of log files by default, but this configuration must be verified. Satisfies: SRG-APP-000119-WSR-000069, SRG-APP-000120-WSR-000070

STIG	Date
VMware vSphere 6.7 STS Tomcat Security Technical Implementation Guide	2022-01-03

Details

Check Text ( C-42891r816697_chk )
Connect to the PSC, whether external or embedded. At the command prompt, execute the following command: # find /storage/log/vmware/sso/ -xdev -type f -a '(' -perm -o+w -o -not -user root -o -not -group root ')' -exec ls -ld {} \; If any files are returned, this is a finding.

Fix Text (F-42850r816698_fix)
Connect to the PSC, whether external or embedded. At the command prompt, execute the following commands: # chmod o-w # chown root:root Note: Substitute with the listed file.