Since users who download Whonix images now are vulnerable and easily fall for regular upgardes, a warning for all supported Whonix platforms on their respective download pages has been added. Implemented just now in a form of a wiki template.
The plan is that once Whonix images with fixed apt are released as stable, that template will be emptied (should then have the same effect as not being added). Should a similar situation arise, that template can be refilled.
I feel like this has already been discussed during the transitional phase from Whonix 12 to 13, though in the wake of this security issue, it might be a good idea to bring it up again. It would perhaps be a good idea to have an aditional field in Whonixcheck which informs users of imminent issues or events, like upgrading to a new version or a bigger security flaw which requires manual changes, like this, since a lot of users likely don’t read the blog or subscribe to a newsletter. Those things of course are still important though for emergencies like this, a seperate way of communcating might be a good idea.
It would perhaps be a good idea to have an aditional field in Whonixcheck which informs users of imminent issues or events,
There is an insufficient one. Called Whonix News as part of whonixcheck. (old screenshot) Insufficient, because it gets hardly noticed by anyone ever. [At least the news files gpg verification stuff is done and hopefully solid, see source code.]
Similarly a ticket for Emergency News Notification is does not yet exist. Ideally also a generic package that can enter packages.debian.org, where Debian and its derivatives such as Qubes and Whonix can drop .d style configuration snippets.
A generic package is better. Then Debian would have informed us about this CVE-2016-1252 earlier.
Ideally the Emergency News Notification tool would also have a Permanent Takedown Attack Defender feature. The initial version wouldn’t require that, but I would be good to plan ahead so it can be added in a later iteration.
Since this is a rather involved project, I suggest to start with a great description of the problems we are seeing, as well as with the solution we are proposing. And then post this on the debian-devel mailing list in the hope that people agree and $someone will implement it. [And even if there is no $someone, there will be hopefully a ton of feedback on how to get this right.] Anyone wanting to take the lead on that?
Is there anyway to verify non compromise yet for users who had already upgraded to version 188.8.131.52.4 other than looking for “suspiciously extra long lines”? If not, how sure can one be of non compromise?
If running Qubes OS, could other VMs possibly be compromised?
What is best recommendation for user already upgraded to version 184.108.40.206.4?
Would you consider looking for “suspiciously extra long lines” and finding none, a reasonable confirmation of not having been compromised?
Following the directions, I didn’t see anything obviously suspicious.
Don’t believe I’m a target, just privacy conscious.
Going to put you on the spot. Sorry…
If it were you, what would you do in this situation?
No, because that is the first thing sophisticated malware would cover up after getting active on the system. And any attacker who exploited this vulnerability would certainly fit the definition of sophisticated.
If you remember running apt-get update and you remember it not taking unusually long, that is if it did take as long as to download a ~ 1.3 GB file, then chances are very good you have not been compromised.
I am not aware of any reports of active attempts of exploitation of this bug in the wild. So for now targeted attacks only if anything. I can’t calculate a probability from that.
During manual apt-get update it would look sketchy to fetch a > 1 GB file. So not that unlikely to be spotted, I would speculate.
Most at risk seem systems using unattended upgrades. (No, Whonix does not use that.) (Specifically if these are distinguishable from manual apt-get updates - they could be - if they are running at expectable times. I don’t remember / haven’t checked this.)