Re: [WEB SECURITY] Round-up: Ways to bypass HttpOnly (and HTTP Basic auth)

["Brian Eaton" <eaton.lists () gmail com>]

Bad form, replying to my own e-mail...

On 5/3/06, Brian Eaton <eaton.lists () gmail com> wrote:
> > On the other hand, several attacks against the above techniques cropped up in the
> > recent few years, and I'd like to summarize them in this message. All attacks assume
> > an XSS condition in the application (actually, on the host for which the cookies/basic
> > auth is used), and using this XSS condition, the data in the HttpOnly cookie/basic
> > auth is read.
>
> It looks like the attacks fall into three categories:
>
> - attacks requiring XSS + TRACE.
> - attacks requiring XSS + request smuggling.
> - attacks requiring XSS + a test script that acts similarly to the
> TRACE method, returning request values to the browser.

There's one other class of attacks that HttpOnly doesn't help with,
CSRF.  Note that XSS is not a prerequisite to CSRF, but if the
application is vulnerable to XSS it is probably vulnerable to CSRF as
well.

Comment 20 to the mozilla bug describes the attack.

https://bugzilla.mozilla.org/show_bug.cgi?id=178993#c20

Regards,
Brian

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