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Security bug in Apache project: Jakarta Tomcat
From: Jan.Madsen () SECURITYWORKERS DK (Jan Madsen)
Date: Wed, 22 Mar 2000 01:08:15 +0100


The Apache project: Jakarta Tomcat contains a serius security bug.
Tomcat is used together with the Apache web server to serve Java Server
Pages and Java servlets.
Summary from the Tomcat development team advisory is posted below:

Advisory:

Delivered with Tomcat is an example (jsp/source.jsp) that can be used to
deliver the contents of any file on your machine.

Recommended action:

The simplest course of action is to simply remove this example from your
machine. Alternatively, you can replace the associated ShowSource.class file
with one from the current 3.1 beta.

Fixes:

Fixes have been made to the core of Tomcat to not allow any file references
to be resolved outside of the context being used for the resolution.
Additionally, a change has been made to ShowSource.java to disallow any
requests which contain the string "..".

The 3.1 beta 1 release has been refreshed with these fixes applied.

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Med venlig hilsen/Best regards/Freundliche Grüße

Jan Madsen

S e c u r i t y w o r k e r s
Denmark
Tlf: (+45) 70 26 88 62
Fax: (+45) 70 26 88 63
http://www.securityworkers.com/
mailto:Jan.Madsen () securityworkers dk

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