When a SecurityManager is configured, a web application’s ability to read system properties should be controlled by the SecurityManager. In Apache Tomcat 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70, 6.0.0 to 6.0.45 the system property replacement feature for configuration files could be used by a malicious web application to bypass the SecurityManager and read system properties that should not be visible.
rhn.redhat.com/errata/RHSA-2017-0457.html
www.debian.org/security/2016/dsa-3720
www.securityfocus.com/bid/93943
www.securitytracker.com/id/1037143
access.redhat.com/errata/RHSA-2017:0455
access.redhat.com/errata/RHSA-2017:0456
access.redhat.com/errata/RHSA-2017:2247
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security.netapp.com/advisory/ntap-20180605-0001/
usn.ubuntu.com/4557-1/
www.oracle.com/security-alerts/cpuoct2021.html