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             AUSCERT External Security Bulletin Redistribution

                    ESB-2008.0772 -- [Win][UNIX/Linux]
                 Multiple vulnerabilities in Apache Tomcat
                               4 August 2008

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              Apache Tomcat 6.0.0 to 6.0.16
                      Apache Tomcat 5.5.0 to 5.5.26
                      Apache Tomcat 4.10 to 4.1.37
Publisher:            Apache
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact:               Cross-site Scripting
                      Read-only Data Access
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-2370 CVE-2008-1232

Original Bulletin:    http://tomcat.apache.org/security.html

Comment: Please note that there are two Apache advisories in this bulletin.

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CVE-2008-1232: Apache Tomcat XSS vulnerability

Severity: Low

Vendor:
The Apache Software Foundation

Versions Affected:
Tomcat 4.1.0 to 4.1.37
Tomcat 5.5.0 to 5.5.26
Tomcat 6.0.0 to 6.0.16
The unsupported Tomcat 3.x, 4.0.x and 5.0.x versions may be also affected

Description:
The message argument of HttpServletResponse.sendError() call is not only
displayed on the error page, but is also used for the reason-phrase of HTTP
response. This may include characters that are illegal in HTTP headers. It
is possible for a specially crafted message to result in arbitrary content
being injected into the HTTP response. For a successful XSS attack,
unfiltered user supplied data must be included in the message argument.

Mitigation:
6.0.x users should upgrade to 6.0.18
5.5.x users should obtain the latest source from svn or apply this patch
which will be included from 5.5.27
http://svn.apache.org/viewvc?rev=680947&view=rev

4.1.x users should obtain the latest source from svn or apply this patch
which will be included from 4.1.38
http://svn.apache.org/viewvc?rev=680947&view=rev (connector only)
http://svn.apache.org/viewvc?rev=680948&view=rev

Example:
<%@page contentType="text/html"%>
<%
~  // some unicode characters, that result in CRLF being printed
~  final String CRLF = "\u010D\u010A";

~  final String payload = CRLF + CRLF + "<script
type='text/javascript'>document.write('Hi, there!')</script><div
style='display:none'>";
~  final String message = "Authorization is required to access " + payload;
~  response.sendError(403, message);
%>


Credit:
This issue was discovered by Konstantin Kolinko.

References:
http://tomcat.apache.org/security.html

Mark Thomas
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CVE-2008-2370: Apache Tomcat information disclosure vulnerability

Severity: Important

Vendor:
The Apache Software Foundation

Versions Affected:
Tomcat 4.1.0 to 4.1.37
Tomcat 5.5.0 to 5.5.26
Tomcat 6.0.0 to 6.0.16
The unsupported Tomcat 3.x, 4.0.x and 5.0.x versions may be also affected

Description:
When using a RequestDispatcher the target path was normalised before the
query string was removed. A request that included a specially crafted
request parameter could be used to access content that would otherwise be
protected by a security constraint or by locating it in under the WEB-INF
directory.

Mitigation:
6.0.x users should upgrade to 6.0.18
5.5.x users should obtain the latest source from svn or apply this patch
which will be included from 5.5.27
http://svn.apache.org/viewvc?rev=680949&view=rev
4.1.x users should obtain the latest source from svn or apply this patch
which will be included from 4.1.38
http://svn.apache.org/viewvc?rev=680950&view=rev

Example:
For a page that contains:
<%
pageContext.forward("/page2.jsp?somepar=someval&par="+request.getParameter("blah"));
%>
an attacker can use:
http://host/page.jsp?blah=/../WEB-INF/web.xml

Credit:
This issue was discovered by Stefano Di Paola of Minded Security Research
Labs.

References:
http://tomcat.apache.org/security.html

Mark Thomas
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===========================================================================
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