Apache Tomcat versions 7.0.0 to 7.0.84, 8.0.0.RC1 to 8.0.49 and 8.5.0 to 8.5.27 does not properly handle the URL empty string ("") when used as part of a security constraint definition. This can lead to the security constraint being ignored, leading to unitended exposure of resources.

External References:

https://tomcat.apache.org/security-7.html#FixedinApacheTomcat7.0.85 https://tomcat.apache.org/security-8.html#FixedinApacheTomcat8.0.50 https://tomcat.apache.org/security-8.html#FixedinApacheTomcat8.5.28

Upstream Bug Report:

https://bz.apache.org/bugzilla/showbug.cgi?id=62067

Upstream Fixes:

Tomcat 7.0.x:

http://svn.apache.org/viewvc?view=rev&rev=1823309

Tomcat 8.0.x:

http://svn.apache.org/viewvc?view=rev&rev=1814827

Tomcat 8.5.x:

http://svn.apache.org/viewvc?view=rev&rev=1823307