Il giorno sab, 17/11/2018 alle 18.12 +0100, Guido Trentalancia ha
scritto:
> Il giorno sab, 17/11/2018 alle 17.50 +0100, Stefan Brüns ha scritto:
> > On Samstag, 17. November 2018 17:37:39 CET Guido Trentalancia
> > wrote:
> > > Bug #1329 has now been opened:
> > > 
> > > https://sigrok.org/bugzilla/show_bug.cgi?id=1329
> > > 
> > > Anyone can test the current udev rule that you wrote and easily
> > > realize
> > > that it triggers the bug, as explained in the bug report and in
> > > this
> > > thread.
> > > 
> > > It leads to *device opening failures*, therefore users are not
> > > able
> > > to
> > > use sigrok and libsigrok !
> > Your patch removes any access control to the devices. This can be
> > a 
> > significant security problem, as the rules also cover other devices
> > connected 
> > using usb-serial converters, like braille devices.
> 
> There is no security concern, as explained in the bug report.
> 
> The devices do not contain sensitive information and all information
> (mostly traces) is completely decontextualized, therefore completely
> unintelligible and unusable to an unauthorized third party.
> 
> The general-purpose rules are *only effective with devices used by
> sigrok* and marked with ID_SIGROK = 1.

Not to mention the fact that relying on "security" provided by udev is
the wrong approach to security !

There are dedicated security frameworks such as SELinux that people
should rely on instead !

A false sense of security is worse than no security at all.


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