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List:       oss-security
Subject:    Re: [oss-security] CVE Request: avahi DoS
From:       Josh Bressers <bressers () redhat ! com>
Date:       2010-06-25 16:49:29
Message-ID: 1313128021.1201161277484569732.JavaMail.root () zmail01 ! collab ! prod ! int ! phx2 ! redhat ! com
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Please use CVE-2010-2244

Thanks.

-- 
    JB


----- "Ludwig Nussel" <ludwig.nussel@suse.de> wrote:

> Hi,
> 
> avahi crashes if it receives a bad packet (broken checksum)
> immediately followed by a good packet. In that case FIONREAD returns
> zero size for the bad packet. avahi doesn't consider that an error
> and calls recvmsg() which succeeds and returns the good packet which
> has a non-zero length of course. This discrepancy causes an assert()
> to fail and avahi terminates.
> 
> The problem was acknowledged by upstream (Lennart) but no fix
> was commited so far. I've attached my patch proposal.
> 
> cu
> Ludwig
> 
> -- 
>  (o_   Ludwig Nussel
>  //\   
>  V_/_  http://www.suse.de/
> SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nuernberg)
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