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Message-ID: <51E4CE6C.5020202@redhat.com>
Date: Mon, 15 Jul 2013 22:39:08 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE Request -- spice: unsafe clients ring access
abort
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 07/15/2013 05:25 PM, Petr Matousek wrote:
> Currently, both red_channel_pipes_add_type() and
> red_channel_pipes_add_empty_msg() use plaing RING_FOREACH() which
> is not safe versus removals from the ring within the loop body.
> Yet, when (network) error does occur, the current item could be
> removed from the ring down the road and the assertion in
> RING_FOREACH()'s ring_next() could trip, causing the process
> containing the spice server to abort.
>
> An user able to initiate spice connection to the guest could use
> this flaw to crash the guest.
>
> Upstream fix:
> http://cgit.freedesktop.org/spice/spice/commit/?id=53488f0275d6c8a121af49f7ac817d09ce68090d
>
> References: https://bugzilla.redhat.com/show_bug.cgi?id=984769
>
> Thanks,
>
Please use CVE-2013-4130 for this issue.
- --
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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