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Thu Feb 21 19:39:17 CET 2013 · https://mail.python.org/pipermail/python-dev/2013-February/124239.html

On Thu, Feb 21, 2013 at 9:23 AM, Stephen J. Turnbull <stephen at xemacs.org>wrote:

> Jesse Noller writes:
>
>  > I guess someone need to write a proof of concept exploit for you
>  > and release it into the wild.
>
> This is a bit ridiculous.  This stuff looks easy enough that surely
> Christian's post informed any malicious body who didn't already know
> how to do it.  If the exploit matters, it's already in the wild.
> ("Hey, didja know that an XML processor that expands entities does so
> recursively?"  "Uh-oh ....")
>

Just to clarify for my own curiosity. These attacks (e.g.
http://en.wikipedia.org/wiki/Billion_laughs) have been known and public
since 2003?

Eli
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[Python-Dev] XML DoS vulnerabilities and exploits in Python