Re: special characters (HTTP)

[Iván Arce <core.lists.exploit-dev () CORE-SDI COM>]

Mikael Olsson wrote:
> Peter Tonoli wrote:
> > On Sun, 6 Aug 2000, Bluefish wrote:
> >
> > > I believe most mayor httpds (apache, IIS etc) has delt with this problem
> > > long ago. However, some less wellknown httpd-softwares have had serious
> > > problems with this (checking that URL doesn't contain ".." BEFORE
> > > converting special characters)
> >
> > Err, shouldn't this be *after* converting special chars? What if the
> > converted characters are '..' or similar - I seem to remember a
> > vulnerability involving this (can't remember what http server
> > however!). :)

Last week's advisory on NAI Net Tools PKI Server included one of these
as problem #2


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 a house from a horse by the roof on the house,
 It's nature and laws have been exhaustively expounded by Locke,
 who rode a house, and Kant, who lived in a horse." - Ambrose Bierce


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