The VMware Postgres database must protect log files from unauthorized access and modification.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-256595	SRG-APP-000118-DB-000059	VCPG-70-000005	SV-256595r887571_rule	2023-06-15	1

Description
If audit data were to become compromised, 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 audit records provides information an attacker could use to their advantage. To ensure the veracity of audit data, the information system and/or the application must protect audit information from all unauthorized access. This includes read, write, copy, etc. Satisfies: SRG-APP-000118-DB-000059, SRG-APP-000119-DB-000060, SRG-APP-000120-DB-000061

Description

If audit data were to become compromised, 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 audit records provides information an attacker could use to their advantage. To ensure the veracity of audit data, the information system and/or the application must protect audit information from all unauthorized access. This includes read, write, copy, etc. Satisfies: SRG-APP-000118-DB-000059, SRG-APP-000119-DB-000060, SRG-APP-000120-DB-000061

ℹ️ Check
At the command prompt, run the following command: # find /var/log/vmware/vpostgres/* -xdev -type f -a '(' -not -perm 600 -o -not -user vpostgres -o -not -group vpgmongrp ')' -exec ls -ld {} \; If any files are returned, this is a finding.

✔️ Fix
At the command prompt, run the following commands: # chmod 600 <file> # chown vpostgres:vpgmongrp <file> Note: Replace <file> with the file that has incorrect permissions. At the command prompt, run the following commands: # /opt/vmware/vpostgres/current/bin/psql -U postgres -c "ALTER SYSTEM SET log_file_mode TO '0600';" # /opt/vmware/vpostgres/current/bin/psql -U postgres -c "SELECT pg_reload_conf();"

✔️ Fix

At the command prompt, run the following commands: # chmod 600 <file> # chown vpostgres:vpgmongrp <file> Note: Replace <file> with the file that has incorrect permissions. At the command prompt, run the following commands: # /opt/vmware/vpostgres/current/bin/psql -U postgres -c "ALTER SYSTEM SET log_file_mode TO '0600';" # /opt/vmware/vpostgres/current/bin/psql -U postgres -c "SELECT pg_reload_conf();"