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mFat to Linux@lemmy.mlEnglish • 1 year ago

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

www.youtube.com

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

www.youtube.com

mFat to Linux@lemmy.mlEnglish • 1 year ago
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Unveiling the xz Utils Backdoor which deliberately opens our SSH connections for RCEs
www.youtube.com
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In the latest liblzma update, a trusted bad actor called 'JiaT75' implemented a backdoor which allows RCE (sending calls to system()) on ssh connections. Her...
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  • @tsonfeir@lemm.ee
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    33•1 year ago

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

    • @BOFH666@lemmy.world
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      26•1 year ago

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

      Check the links on that page.

  • @perishthethought@lemm.ee
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    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
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    15•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
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      7•1 year ago

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

      • P03 Locke
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        10•1 year ago

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

  • @mudle@lemmy.ml
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    11•
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    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
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    5•
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    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
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      9•1 year ago

      Assume yes until you can prove otherwise.

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

        deleted by creator

      • @rotopenguin@infosec.pub
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        1•1 year ago

        deleted by creator

    • Possibly linux
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      1•
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      1 year ago

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

  • j4yt33
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    3•1 year ago

    I need the IASIP meme for this thumbnail

  • @PipedLinkBot@feddit.rocksB
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    3•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
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    2•1 year ago

    That thumbnail is something else

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