Re: [Qemu-devel] Always get Invalid password while trying to connect to spice server

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Hey,

On Thu, Jan 03, 2019 at 04:25:00PM -0600, Eric Blake wrote:
> On 12/27/18 8:51 AM, Niccolò Belli wrote:
> > On mercoledì 26 dicembre 2018 13:38:28 CET, Frediano Ziglio wrote:
> >> Yes, this looks like a format string error in the upper (not into
> >> spice) layer.
> >>
> >> This potentially is a security problem.
> > 
> > Considering the spice server is exposed to the internet this is
> > definitely worth investigating.
> > 
> >> The specific '%' character could be the issue, can you try others
> >> ('!', '@' and
> >> so on) ?
> > 
> > I tried several other special characters and they all seems to work,
> > expect for "Password&&" which gets converted to "Password&&" (if
> > I type "Password&&" it works).
> 
> Could it be related to this patch where our JSON code mishandles %?
> https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg00108.html

Yes definitely, this is where the patch came from.
Mentioning this spice issue is yet another thing I should have added in the
commit log, but which I only thought about *after* having sent the patch :)

Christophe

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