[java-sig-commits] [Bug 1459158] New: CVE-2017-5664 tomcat: Security constrained bypass in error page mechanism

https://bugzilla.redhat.com/show_bug.cgi?id=1459158

Bug ID: 1459158
           Summary: CVE-2017-5664 tomcat: Security constrained bypass in
                    error page mechanism
           Product: Security Response
         Component: vulnerability
          Keywords: Security
          Severity: high
          Priority: high
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail], [e-mail],
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                    [e-mail], [e-mail],
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                    [e-mail], [e-mail]

The error page mechanism of the Java Servlet Specification requires that, when
an error occurs and an error page is configured for the error that occurred,
the original request and response are forwarded to the error page. This means
that the request is presented to the error page with the original HTTP method.

If the error page is a static file, expected behaviour is to serve content of
the file as if processing a GET request, regardless of the actual HTT method.
Tomcat's Default Servlet did not do this. Depending on the original request
this could lead to unexpected and undesirable results for static error pages
including, if the DefaultServlet is configured to permit writes, the
replacement or removal of the custom error page.

Affects: 7.0.0 to 7.0.77, 8.0.0.RC1 to 8.0.43, 8.5.0 to 8.5.14

Upstream fixes:

Tomcat 7.x:

https://svn.apache.org/viewvc?view=revision&revision=1793471
https://svn.apache.org/viewvc?view=revision&revision=1793491

Tomcat 8.0.x:

https://svn.apache.org/viewvc?view=revision&revision=1793470
https://svn.apache.org/viewvc?view=revision&revision=1793489

Tomcat 8.5.x:

https://svn.apache.org/viewvc?view=revision&revision=1793469
https://svn.apache.org/viewvc?view=revision&revision=1793488

External References:

https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.78
https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.0.44
https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.15