tc Server VCAC log files must only be accessible by privileged users.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-89981	VRAU-TC-000270	SV-100631r1_rule		Medium

Description
Log data is essential in the investigation of events. If log data were to become compromised, then competent forensic analysis and discovery of the true source of potentially malicious system activity would be difficult, if not impossible, to achieve. In addition, access to log records provides information an attacker could potentially use to their advantage since each event record might contain communication ports, protocols, services, trust relationships, user names, etc. The web server must protect the log data from unauthorized read, write, copy, etc. This can be done by the web server if the web server is also doing the logging function. The web server may also use an external log system. In either case, the logs must be protected from access by non-privileged users.

Description

Log data is essential in the investigation of events. If log data were to become compromised, then competent forensic analysis and discovery of the true source of potentially malicious system activity would be difficult, if not impossible, to achieve. In addition, access to log records provides information an attacker could potentially use to their advantage since each event record might contain communication ports, protocols, services, trust relationships, user names, etc. The web server must protect the log data from unauthorized read, write, copy, etc. This can be done by the web server if the web server is also doing the logging function. The web server may also use an external log system. In either case, the logs must be protected from access by non-privileged users.

STIG	Date
VMware vRealize Automation 7.x tc Server Security Technical Implementation Guide	2018-10-12

Details

Check Text ( C-89673r1_chk )
At the command prompt, execute the following command: ls -lL /storage/log/vmware/vcac If any log files have permissions less restrictive than "640", this is a finding.

Fix Text (F-96723r1_fix)
At the command prompt, execute the following commands: chmod 640 /storage/log/vmware/vcac/ sed -i "/^[^#]*UMASK/ c\UMASK 077" /etc/login.defs Note: Substitute with the listed file.