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    Security on UT

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      • T Offline
        trainailleur @dobey
        last edited by

        @dobey said in Security on UT:

        Yes, which absolutely nobody ever wants to have to actually remember with their brain or type on a phone screen.

        There's a reason that storing the key on separate media (hardware backed encryption keys in android) and avoiding extraneous user interaction is preferred by both Android and iOS now.

        Correct Horse Battery Staple is a good start, and its entropy can be improved on considerably whilst still remaining memorable. That's something I can live with in the absence of perfection. πŸ™‚

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        • ? Offline
          A Former User @dobey
          last edited by

          @dobey Before I start writting this post I did some reading.
          https://sensorstechforum.com/ubuntu-touch-os-is-it-secure-enough-and-should-you-use-it/
          It is from 2016.
          So today, the biggest issue is with adb and the bootloader, as far I understand.
          How did the things changed from 2016 ? Would the PinePhone make a change regarding this?

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            A Former User @trainailleur
            last edited by

            @trainailleur So the biggest concern is if someone get fizical access to the device? I understood right?

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            • arubislanderA Offline
              arubislander @Guest
              last edited by

              @C0n57an71n said in Security on UT:

              @dobey Before I start writting this post I did some reading.
              https://sensorstechforum.com/ubuntu-touch-os-is-it-secure-enough-and-should-you-use-it/
              It is from 2016.
              So today, the biggest issue is with adb and the bootloader, as far I understand.
              How did the things changed from 2016 ? Would the PinePhone make a change regarding this?

              That article didn't make much sense to me to be honest. The security issues it mentioned were either not limited to or able to be mitigated by the phone OS, or not clearly explained why they were seen to be security issues.

              πŸ‡¦πŸ‡Ό πŸ‡³πŸ‡± πŸ‡ΊπŸ‡Έ πŸ‡ͺπŸ‡Έ
              Happily running Ubuntu Touch
              Google Pixel 3a (20.04 DEV)
              JingPad (24.04 preview)
              Meizu Pro 5 (16.04 DEV)

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              • dobeyD Offline
                dobey @Guest
                last edited by

                @C0n57an71n I don't think that accurately applies to UT, and honestly I'd never seen it before anyway.

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                • dobeyD Offline
                  dobey @trainailleur
                  last edited by

                  @trainailleur That may be true, but having to type that every time you pick up your phone to do something is going to become very tiring, very quickly. It's also going to be easy to make a mistake while typing, and with proper measures to prevent brute force attacks, could lead to loss of data; while at the same time, not preventing the copying of key/data off to attack with much more powerful hardware.

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                  • dobeyD Offline
                    dobey @Guest
                    last edited by

                    @C0n57an71n said in Security on UT:

                    @trainailleur So the biggest concern is if someone get fizical access to the device? I understood right?

                    Yes. The point of encrypting the storage, is to protect data when the attack has gained physical access.

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                    • T Offline
                      trainailleur @dobey
                      last edited by trainailleur

                      @dobey said in Security on UT:

                      @trainailleur That may be true, but having to type that every time you pick up your phone to do something is going to become very tiring, very quickly. It's also going to be easy to make a mistake while typing, and with proper measures to prevent brute force attacks, could lead to loss of data; while at the same time, not preventing the copying of key/data off to attack with much more powerful hardware.

                      No, as typically implemented by Linux distros (including Ubuntu), you only type a luks passphase once between boots, prior to the mounting of the filesystem it contains. Your login and screen unlock passwords can be as long or short as you want them to be. The idea is that a running system should be cagey enough to resist a break-in but that a non-running system - at least on legacy hardware - has very little to protect it. The situation of legacy PC hardware is somewhat analogous to phones with unlocked bootloaders. Postmarket's osk-sdl is a small onscreen keyboard to serve exactly this purpose. (It looks like it is slated for their Community Edition PinePhone, incidentally.)

                      Yes, a running or even non-running system that is captured could be subject to a cold-boot attack and memory dump, but that is far from 100% reliable, and filesystem encryption remains a high barrier to intrusion.

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                      • T Offline
                        trainailleur @arubislander
                        last edited by

                        @arubislander said in Security on UT:

                        That article didn't make much sense to me to be honest. The security issues it mentioned were either not limited to or able to be mitigated by the phone OS, or not clearly explained why they were seen to be security issues.

                        Not to mention that a misconception that Ubuntu Touch would be identical to mainstream Ubuntu is one of the core assumptions of the article. There is no indication that the report the article is cribbing from made that assumption - or even discussed Ubuntu Touch at all - and the link to it is dead so it can't be checked now. I suspect this was a wishful thinking fluff piece by someone who knew very little about UT.

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                        • ? Offline
                          A Former User @trainailleur
                          last edited by

                          @trainailleur There where another articel that was refering to the same test done in UK. I will try found it again if you are curios.

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                          • T Offline
                            trainailleur @Guest
                            last edited by trainailleur

                            @C0n57an71n said in Security on UT:

                            @trainailleur There where another articel that was refering to the same test done in UK. I will try found it again if you are curios.

                            I found the actual UK evaluation on the Wayback Machine. As suspected, there is no mention of Ubuntu Touch at all:

                            End User Devices Security Guidance: Ubuntu 12.04

                            The article you linked was indeed wishful thinking and bad extrapolation.

                            (Anyone interested in reading this may want to act fast, as the Internet Archive is currently under threat of being sued into oblivion.)

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