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Ubuntu Security Notice USN-1048-1 January 24, 2011
tomcat6 vulnerability
CVE-2010-4172
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A security issue affects the following Ubuntu releases:

Ubuntu 9.10
Ubuntu 10.04 LTS
Ubuntu 10.10

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 9.10:
tomcat6-admin 6.0.20-2ubuntu2.3

Ubuntu 10.04 LTS:
tomcat6-admin 6.0.24-2ubuntu1.6

Ubuntu 10.10:
tomcat6-admin 6.0.28-2ubuntu1.1

In general, a standard system update will make all the necessary changes.

Details follow:

It was discovered that Tomcat did not properly escape certain parameters in
the Manager application which could result in browsers becoming vulnerable
to cross-site scripting attacks when processing the output. With cross-site
scripting vulnerabilities, if a user were tricked into viewing server
output during a crafted server request, a remote attacker could exploit
this to modify the contents, or steal confidential data (such as
passwords), within the same domain.