Apache Tomcat cross-site scripting vulnerability

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                    ESB-2009.0211 -- [Win][UNIX/Linux]
             Apache Tomcat cross-site scripting vulnerability
                               9 March 2009

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

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

Product:              Tomcat 6.0.0 to 6.0.18
                      Tomcat 5.5.0 to 5.5.27
                      Tomcat 4.1.0 to 4.1.39
Publisher:            The Apache Software Foundation
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact:               Cross-site Scripting
Access:               Remote/Unauthenticated
CVE Names:            CVE-2009-0781

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

- --------------------------BEGIN INCLUDED TEXT--------------------

- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

CVE-2009-0781: Apache Tomcat cross-site scripting vulnerability

Severity: low

Vendor:
The Apache Software Foundation

Versions Affected:
Tomcat 6.0.0 to 6.0.18
Tomcat 5.5.0 to 5.5.27
Tomcat 4.1.0 to 4.1.39

Description:
The calendar application in the examples contains invalid HTML which
renders the XSS protection for the time parameter ineffective. An
attacker can therefore perform an XSS attack using the time attribute.

Mitigation:
6.0.x users should do one of the following:
 - remove the examples web application
 - apply this patch http://svn.apache.org/viewvc?rev=750924&view=rev
 - upgrade to 6.0.19 when released
5.5.x users should do one of the following:
 - remove the examples web application
 - apply this patch http://svn.apache.org/viewvc?rev=750928&view=rev
 - upgrade to 5.5.28 when released
4.1.x users should do one of the following:
 - remove the examples web application
 - apply this patch http://svn.apache.org/viewvc?rev=750927&view=rev
 - upgrade to 4.1.40 when released

Example:
http://localhost:8080/examples/jsp/cal/cal2.jsp?time=8am%20STYLE=xss:e/**/xpression(try{a=firstTime}catch(e){firstTime=1;alert('XSS')});

Credit:
This issue was discovered by Deniz Cevik.

References:
http://tomcat.apache.org/security.html
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-5.html
http://tomcat.apache.org/security-4.html

The Apache Tomcat Security Team
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFJsUexb7IeiTPGAkMRAnQkAKDSvIKgXQTCEOdYo0T1Ms0ze07qWQCgh2Af
7M0rD3B+d5vu90/ode27FLI=
=Y8kB
- -----END PGP SIGNATURE-----

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iD8DBQFJtH7CNVH5XJJInbgRAsUhAJ0a6Pc5fXXd6ZryLVtDkD+J6logMgCcDQZ8
YVUGIK2XsxUWnvQzxg7V1uU=
=0acv
-----END PGP SIGNATURE-----