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mFat@lemdro.id to Linux@lemmy.mlEnglish · 1 year ago

Unveiling the xz Utils Backdoor which deliberately opens our SSH connections for RCAs

www.youtube.com

14
112

Unveiling the xz Utils Backdoor which deliberately opens our SSH connections for RCAs

www.youtube.com

mFat@lemdro.id to Linux@lemmy.mlEnglish · 1 year ago
14
In the latest liblzma update, a trusted bad actor called 'JiaT75' implemented a backdoor which allows RCA calls to system() on ssh connections. Here I'm look...
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  • tsonfeir@lemm.ee
    33·
    1 year ago

    Anyone got a link for this topic that isn’t a video?

    • BOFH666@lemmy.world
      26·
      1 year ago

      https://tukaani.org/xz-backdoor/

      Check the links on that page.

  • perishthethought@lemm.eeEnglish
    21·
    1 year ago

    Good explainer, if you need to catch up like I did:

    https://en.m.wikipedia.org/wiki/XZ_Utils

    Read the supply chain attack section.

    Also, from the video…

    X is losing its action! We LIKE!

    Hell yeah we like.

  • BOFH666@lemmy.world
    151·
    1 year ago

    Thanks for the pointer.

    This is really huge, but people don’t quite understand that yet.

    If this wasn’t caught, every system -running public sshd- could be hacked or abused/misused.

    And I completely agree with the last words, corporate should pay foss projects!

    • SMillerNL@lemmy.world
      7·
      1 year ago

      Even paid it might be hard to find maintainers with knowledge of the code

      • P03 Locke@lemmy.dbzer0.comEnglish
        10·
        1 year ago

        https://imgs.xkcd.com/comics/dependency_2x.png

  • mudle@lemmy.ml
    12·
    1 year ago

    For all those wanting to know what version of the xz package you have, DO NOT use xz -V or xz --version. Ask your package manager instead; e.g. apt info xz-utils. Executing a potentially malicious binary IS NOT a good idea, so ask your package manager instead.

  • Goku@lemmy.world
    5·
    1 year ago

    So if I have been using arch with infected xz library to connect to a Debian LTS server, am I compromised?

    • cybersandwich@lemmy.world
      9·
      6 months ago

      deleted by creator

    • TwiddleTwaddle@lemmy.blahaj.zone
      6·
      1 year ago

      From what I’ve read both arch and debian stable aren’t vulnerable to this. It targeted mostly debian-testing.

      • Irate1013@lemmy.ml
        3·
        1 year ago

        Arch put out a statement saying users should update to a non infected binary even though it doesn’t appear to affect Arch https://archlinux.org/news/the-xz-package-has-been-backdoored/

        However, out of an abundance of caution, we advise users to remove the malicious code from their system by upgrading either way. This is because other yet-to-be discovered methods to exploit the backdoor could exist.

      • mosiacmango@lemm.ee
        1·
        1 year ago

        deleted by creator

      • rotopenguin@infosec.pubEnglish
        1·
        1 year ago

        deleted by creator

    • Possibly linux@lemmy.zipEnglish
      1·
      1 year ago

      I would pay attention to the news. You definitely want to upgrade immediately if you have not already

  • j4yt33@feddit.de
    3·
    1 year ago

    I need the IASIP meme for this thumbnail

  • PipedLinkBot@feddit.rocksBEnglish
    31·
    1 year ago

    Here is an alternative Piped link(s):

    https://piped.video/watch?v=gyOz9s4ydho

    Piped is a privacy-respecting open-source alternative frontend to YouTube.

    I’m open-source; check me out at GitHub.

  • Possibly linux@lemmy.zipEnglish
    2·
    1 year ago

    That thumbnail is something else

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