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Message-ID: <20111007212613.GA12618@radis.liafa.jussieu.fr>
Date: Fri, 7 Oct 2011 23:26:13 +0200
From: Julien Cristau <jcristau@...ian.org>
To: oss-security@...ts.openwall.com
Cc: Juliusz Chroboczek <jch@....jussieu.fr>
Subject: Re: Re: CVE Request -- Polipo -- Assertion failure
by processing certain HTTP POST / PUT requests
On Fri, Oct 7, 2011 at 10:11:10 -0600, Vincent Danen wrote:
> * [2011-10-06 18:37:01 +0200] Juliusz Chroboczek wrote:
>
> >> a denial of service flaw was found in the way Polipo, a lightweight
> >>caching web proxy, processed certain HTTP POST / PUT requests. If
> >>polipo was configured to allow remote client connections and particular
> >>host was allowed to connect to polipo server instance, a remote
> >>attacker could use this flaw to cause denial of service (polipo daemon
> >>abort due to assertion failure) via specially-crafted HTTP POST / PUT
> >>request.
> >
> >Yes, this is a known bug with Polipo 1.0.4 and 1.0.4.1. I believe that
> >it is fixed in the Git trunk, which is unfortunately not ready to be
> >released (and might never be unless a maintainer is found).
>
> Do you have a link to the commit, or a commit id? I can't see anything
> on github that looks relevant or recent.
>
> We do ship this in Fedora, so it would be nice to have the patch that we
> could apply to what we are already shipping if no releases are
> forthcoming.
>
git bisect using the PoC from the RH bug suggests that was fixed by
https://gitweb.torproject.org/chrisd/polipo.git/commitdiff/0e2b44af619e46e365971ea52b97457bc0778cd3
Cheers,
Julien
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