New Zope packages are available

New Zope packages are available which fix a security flaw with DTML
scripting.

The updated packages include a "hotfix" product which addresses a security
problem with DTML scripting, as described in the Hotfix_2001-09-28
README.txt file: "The issue involves the fmt attribute of dtml-var tags.
Without this correction, Zope does not check security access to methods
invoked through fmt. This issue could allow partially trusted users with
enough knowledge of Zope to call, in a limited way, methods they would not
otherwise be allowed to access."

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains
the desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this to be an easier way to apply updates. To use Red Hat
Network, launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

After you have updated the packages, you must restart zope:

/etc/rc.d/init.d/zope restart

https://www.redhat.com/security/data/cve/CVE-2001-1227.html
http://www.zope.org/Products/Zope/Hotfix_2001-09-28/README.txt
http://lwn.net/daily/zope-dtml-fmt.php3