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Posted to dev@tomcat.apache.org by bu...@apache.org on 2019/11/27 14:42:09 UTC

[Bug 63968] New: ExpiresFilter: invalid cast

https://bz.apache.org/bugzilla/show_bug.cgi?id=63968

            Bug ID: 63968
           Summary: ExpiresFilter: invalid cast
           Product: Tomcat 8
           Version: 8.5.49
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Catalina
          Assignee: dev@tomcat.apache.org
          Reporter: cpils@timocom.com
  Target Milestone: ----

The getExpirationDate() Method of the ExpiresFilter throws a ClassCastException
when the following conditions hold:
1. the request is ServletRequestWrapper
2. an inner request implements the interface
org.apache.catalina.servlet4preview.http.HttpServletRequest

Then the method will throw a ClassCastException in line 1296 of
org.apache.catalina.filters.ExpiresFilter.

Log Message observed:
Our application uses a custom implementation of a ServletRequestWrapper. The
ClassCastException logs that our custom implementation cannot be cast to
org.apache.catalina.servlet4preview.http.HttpServletRequest

Root Cause
==========
The root cause is that if-conditon in line 1295 checks that innerRequest is an
instance of servlet4preview.http.HttpServletRequest, yet in line 1296 the
request (rather than the innerRequest) is casted. 

Out Tomcat Settings:
====================
We use Tomcat 8.5.49 with Connector-Protocol
org.apache.coyote.http11.Http11NioProtocol.

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[Bug 63968] ExpiresFilter: invalid cast

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=63968

Mark Thomas <ma...@apache.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #1 from Mark Thomas <ma...@apache.org> ---
Thanks for the report.

Fixed in:
- 8.5.x for 8.5.50 onwards

Only 8.5.x was affected.

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