From: Eric Blake <eblake@redhat.com>
To: qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>,
pbonzini@redhat.com,
"open list:Block layer core" <qemu-block@nongnu.org>,
Max Reitz <mreitz@redhat.com>
Subject: Re: [Qemu-devel] [PATCH] nbd: Fix regression on resiliency to port scan
Date: Fri, 9 Jun 2017 06:17:59 -0500 [thread overview]
Message-ID: <094b3fd7-245f-076c-6d05-672f0efef645@redhat.com> (raw)
In-Reply-To: <20170608222617.20376-1-eblake@redhat.com>
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On 06/08/2017 05:26 PM, Eric Blake wrote:
> Back in qemu 2.5, qemu-nbd was immune to port probes (a transient
> server would not quit, regardless of how many probe connections
> came and went, until a connection actually negotiated). But we
> broke that in commit ee7d7aa
> Simple test across two terminals:
> $ qemu-nbd -f raw -p 30001 file
> $ nmap 127.0.0.1 -p 30001 && \
> qemu-io -c 'r 0 512' -f raw nbd://localhost:30001
This is now being assigned a CVE.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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next prev parent reply other threads:[~2017-06-09 11:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-08 22:26 [Qemu-devel] [PATCH] nbd: Fix regression on resiliency to port scan Eric Blake
2017-06-09 11:17 ` Eric Blake [this message]
2017-06-09 11:58 ` Eric Blake
2017-06-11 11:50 ` Max Reitz
2017-06-27 17:06 ` Eric Blake
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