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Message-ID: <20150515134453.GA14212@kronk.local>
Date: Fri, 15 May 2015 15:44:53 +0200
From: Alessandro Ghedini <alessandro@...dini.me>
To: oss-security@...ts.openwall.com, cve-assign@...re.org
Cc: zeromq-dev@...ts.zeromq.org
Subject: Re: CVE Request: zeromq downgrade attack
On Thu, May 07, 2015 at 04:49:08PM +0200, Alessandro Ghedini wrote:
> [ CCing upstream mailing list ]
>
> Hello,
>
> From https://github.com/zeromq/libzmq/issues/1273 :
>
> > It is easy to bypass the security mechanism in 4.1.0 and 4.0.5 by sending a
> > ZMTP v2 or earlier header. The library accepts such connections without
> > applying its security mechanism.
> >
> > Solution: if security is defined on a socket, reject all V2 and earlier
> > connections, unconditionally.
>
> A patch for the zeromq 4.0.x stable series is available at
> https://github.com/zeromq/zeromq4-x/commit/b6e3e0f601e2c1ec1f3aac880ed6a3fe63043e51
>
> AFAICT no CVE has been assigned (or requested) for this, and the issue has
> been public since December of last year.
>
> Could a CVE be assigned please?
Ping?
Cheers
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