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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