When using a VirtualDirContext with Apache Tomcat 7.0.0 to 7.0.80 it was possible to bypass security constraints and/or view the source code of JSPs for resources served by the VirtualDirContext using a specially crafted request.
www.securityfocus.com/bid/100897
www.securitytracker.com/id/1039393
access.redhat.com/errata/RHSA-2018:0465
access.redhat.com/errata/RHSA-2018:0466
lists.apache.org/thread.html/1df9b4552464caa42047062fe7175da0da06c18ecc8daf99258bbda6%40%3Cannounce.tomcat.apache.org%3E
lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
lists.debian.org/debian-lts-announce/2018/06/msg00008.html
security.netapp.com/advisory/ntap-20171018-0001/
support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03828en_us
usn.ubuntu.com/3665-1/
www.synology.com/support/security/Synology_SA_17_54_Tomcat