File contents
Hotfix_2002-04-15
This is a "hotfix" product. Hotfix products can be installed to
incorporate modifications to Zope at runtime without requiring an
immediate installation upgrade. Hotfix products are installed just
as you would install any other Zope product.
This hotfix addresses an important security issue that may effect
some users of all Zope versions prior to 2.4.4b2 and 2.5.1b2.
The issue involves a vulnerability involving "through the web code"
inadvertently allowing an untrusted user to remotely shut down a
Zope server by allowing the user to inject special headers into the
response. If you allow untrusted users to write "through the web"
code like Python Scripts, DTML Methods, or Page Templates, your Zope
server is vulnerable.
We highly recommend that any Zope site have this hotfix product
installed to mitigate the issue. Zope 2.5.1b2 and 2.4.4b2 as
well as subsequent Zope release versions will contain a fix for the
issue, at which time the hotfix can be removed.