Digital Creations Zope contains a flaw that may allow a malicious user to alter the method return values for affected classes. The issue is triggered because of a vulnerability in the handling of the method return values for the ObjectManager, PropertyManager, and PropertySheet classes. It is possible that the flaw may allow data manipulation in the classes resulting in a loss of integrity.
Currently, there are no known workarounds or upgrades to correct this issue. However, Digital Creations has released a patch, as well as linux vendors Mandrake, Debian, Conectiva and Red Hat.