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Thread: 18.04.2 LTS hack

  1. #1
    Join Date
    Feb 2016
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    18.04.2 LTS hack

    I would like a confirmation of the SHA256 for Ubuntu 18.04.2 LTS which is 22580b9f3b186cc66818e60f44c46f795d708a1ad86b9225c4 58413b638459c4. i have had hacks on my Ubuntu here are the symptoms 1. firefox is not the default browser. I use Firefox as my default but it changes even after a reinstall of Firefox 66.02 it is restored with startup preference "always check if firefox is your default" unselected. 2.I cannot prevent the screen saver. I have "screen lock" off and "automatic screen lock" is off but the screen still blanks.

  2. #2
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    Re: 18.04.2 LTS hack

    All the checksums are here: http://releases.ubuntu.com/bionic/

    Firefox is the default browser so does not need that "always check" to be selected since it is already the default.

    As far as the screen going blank, you need to go back to power options and change the screen blanking time: https://help.ubuntu.com/stable/ubunt...-blank.html.en

    Set it to Never or whatever you prefer.

    Hope this helps.

  3. #3
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    Re: 18.04.2 LTS hack

    Thanks. I was able to set the power setting for blanking. The previous version 18.04.1 LTS did not work in the same manner. Isn't Firefox installed by default as "always check if Firefox is your default" enabled ? I have also noticed in the /tmp directory a file called "ssh-V6nudx8ufighd" this file reappears after a reboot, which I don't understand. I am not using ssh server or client on this station. The previous version ssh-server had to be installed.

  4. #4
    maglin2 is offline Gee! These Aren't Roasted!
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    Re: 18.04.2 LTS hack

    I have also noticed in the /tmp directory a file called "ssh-V6nudx8ufighd" this file reappears after a reboot, which I don't understand. I am not using ssh server or client on this station.
    I think that's probably ssh-agent. It seems to start automatically these days. In my case (kubuntu) it is called by startkde.

    In ubuntu it is called by gnome-session. It is present in an 18.04 live usb session.
    Last edited by maglin2; April 7th, 2019 at 10:10 AM.

  5. #5
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    Re: 18.04.2 LTS hack

    Hi cam17,

    We do not see anything here to be worried about but obviously there are things you seem concerned with.

    I would suggest reading the Ubuntu Security sticky https://ubuntuforums.org/showthread.php?t=510812

    In general, the same rules apply as with any operating system; do not open unknown attachments, do not give out personal information online, do not browse on suspicious websites etc.

    If you want to add things like NoScript, AdBlock etc. to the browser there is no harm in doing so and it will certainly help you avoid some of the junk out there.

    Please feel free to ask anything if you are worried about the security of your system.

  6. #6
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    Re: 18.04.2 LTS hack

    But I have not installed ssh on my workstation. What is it purpose? I have also noticed that snapd appears to be installed by defaut installation. do you know if that is true?

  7. #7
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    Re: 18.04.2 LTS hack

    A lot of programs are installed by default, whether you choose to use them or remove them is up to you.

    snapd seems quite normal: https://launchpad.net/snapd

    If you are concerned, you might want to consider the install option for a minimal installation. This only adds a web browser and the most basic utilities for functionality https://www.omgubuntu.co.uk/2018/02/...install-option

    You can then later add only what you specifically decide to install.

  8. #8
    maglin2 is offline Gee! These Aren't Roasted!
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    Re: 18.04.2 LTS hack

    I suspect (but I haven't checked) that you may still get snapd with the minimal install, since system monitor is by default a snap package in 18.04.

  9. #9
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    Feb 2016
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    Re: 18.04.2 LTS hack

    When I view this Ubuntu site it suggests it has to be installed. https://tutorials.ubuntu.com/tutoria...c-snap-usage#1 I have also noticed that when I try to installed h264 using the command "sudo apt-get install h264enc" It does not work and I just performed the command a few days agojust before this latest reinstall. Another point for this hack is after a complete reinstall I can no longer see Firewall configuration(Gui) or wireshark in on the ca.archive.ubuntu.com/ubuntu download configured in "Software & Updates" but I can now see it when I switch to another downloader. I have noticed April-8-2019 that when I view installed applications in Ubuntu software, firefox is missing even though it is on the dock icon. When I try to open firefox it it slows the whole machine.
    Last edited by cam17; April 8th, 2019 at 12:27 PM.

  10. #10
    Join Date
    Feb 2016
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    Re: 18.04.2 LTS hack

    --I have installed Wireshark and it initially worked but now it does not function and cannot be removed.This is still using the original fresh install.
    See enclosed processes
    Attached Images Attached Images

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