gioia://news
  • Communities
  • Create Post
  • heart
    Support Lemmy
  • search
    Search
  • Login
  • Sign Up
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

external-link
message-square
14
fedilink
112
external-link

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
message-square
14
fedilink
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...
alert-triangle
You must log in or register to comment.
  • TherouxSonfeir@lemm.ee
    link
    fedilink
    arrow-up
    33
    ·
    1 year ago

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

    • BOFH666@lemmy.world
      link
      fedilink
      arrow-up
      26
      ·
      1 year ago

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

      Check the links on that page.

  • perishthethought@lemm.ee
    link
    fedilink
    English
    arrow-up
    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
    link
    fedilink
    arrow-up
    15
    arrow-down
    1
    ·
    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
      link
      fedilink
      arrow-up
      7
      ·
      1 year ago

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

      • P03 Locke@lemmy.dbzer0.com
        link
        fedilink
        English
        arrow-up
        10
        ·
        1 year ago

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

  • mudle@lemmy.ml
    link
    fedilink
    arrow-up
    12
    ·
    edit-2
    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
    link
    fedilink
    arrow-up
    5
    ·
    edit-2
    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
      link
      fedilink
      arrow-up
      9
      ·
      edit-2
      3 months ago

      deleted by creator

    • TwiddleTwaddle@lemmy.blahaj.zone
      link
      fedilink
      arrow-up
      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
        link
        fedilink
        arrow-up
        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.

      • rotopenguin@infosec.pub
        link
        fedilink
        English
        arrow-up
        1
        ·
        1 year ago

        deleted by creator

      • mosiacmango@lemm.ee
        link
        fedilink
        arrow-up
        1
        ·
        1 year ago

        deleted by creator

    • Possibly linux@lemmy.zip
      link
      fedilink
      English
      arrow-up
      1
      ·
      edit-2
      1 year ago

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

  • j4yt33@feddit.de
    link
    fedilink
    arrow-up
    3
    ·
    1 year ago

    I need the IASIP meme for this thumbnail

  • Possibly linux@lemmy.zip
    link
    fedilink
    English
    arrow-up
    2
    ·
    1 year ago

    That thumbnail is something else

  • PipedLinkBot@feddit.rocksB
    link
    fedilink
    English
    arrow-up
    3
    arrow-down
    1
    ·
    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.

Linux@lemmy.ml

linux@lemmy.ml

Subscribe from Remote Instance

Create a post
You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: !linux@lemmy.ml

From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

  • Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
  • No misinformation
  • No NSFW content
  • No hate speech, bigotry, etc

Related Communities

  • !opensource@lemmy.ml
  • !libre_culture@lemmy.ml
  • !technology@lemmy.ml
  • !libre_hardware@lemmy.ml

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

Visibility: Public
globe

This community can be federated to other instances and be posted/commented in by their users.

  • 546 users / day
  • 3.47K users / week
  • 8.24K users / month
  • 17.6K users / 6 months
  • 1 local subscriber
  • 54.1K subscribers
  • 7.55K Posts
  • 204K Comments
  • Modlog
  • mods:
  • nooter692@lemmy.ml
  • AgreeableLandscape@lemmy.ml
  • MarcellusDrum@lemmy.ml
  • Arthur Besse@lemmy.ml
  • Cyclohexane@lemmy.ml
  • d3Xt3r@lemmy.nz
  • BE: 0.19.9
  • Modlog
  • Instances
  • Docs
  • Code
  • join-lemmy.org