Re: Ask for suggestions for CVE-2019-12928

[Daniel P . Berrangé]

On Mon, Jan 11, 2021 at 11:43:53PM +0800, 江芳杰 wrote:
> Hi:
>     Sorry to bother you~
>     I have read the discussions about CVE--2019-12928 ( 
> https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg01153.html).
> But, for the scenario of PC users, which is no requirement of network access 
> to QMP, there are some mitigating proposes.
> 1. Modify the compilation options to disable QMP.
> 2. Modify command line parsing function to discard the QMP parameters with 
> network configurations.
> 3. PC manager or other manage software make sure only the trusted user can 
> use QMP.
> 4. Other ideas?

No code changes are required at all. The described scenario was simply a
user mis-configuration.

In rare case there can be valid reasons to use QMP on a public IP address,
but anyone doing so must ensure their usage is secure.

Regards,
Daniel
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