full-disclosure - Re: Denial of Service in WordPress

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Message-ID: <CALx_OUCtsWAHdm3bA5CVTjyfeNqma_Cx=tCxWFjMOZwXT8RRRw@mail.gmail.com>
Date: Thu, 27 Jun 2013 23:19:28 -0700
From: Michal Zalewski <lcamtuf@...edump.cx>
To: MustLive <mustlive@...security.com.ua>
Cc: full-disclosure <full-disclosure@...ts.grok.org.uk>
Subject: Re: Denial of Service in WordPress

> Attack exactly overload web sites presented in endless loop of redirects. As
> I showed in all cases of Looped DoS vulnerabilities in web sites and web
> applications, which I wrote about during 2008 (when I created this type of
> attacks) - 2013.

You do realize that any browser can be made to issue a *lot* of
requests to any other destination on the web - say, by instantiating a
bunch of images, leveraging CORS, navigating iframes, etc?

Browsers detect redirect loops to prevent accidental mishaps and
simplify troubleshooting, not to stop malicious attacks.

/mz

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