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Backdoor found in widely used Linux utility breaks encrypted SSH connections (arstechnica.com)

submitted 8 months ago by [email protected] to c/[email protected]

187 comments fedilink hide all child comments

The malicious changes were submitted by JiaT75, one of the two main xz Utils developers with years of contributions to the project.

“Given the activity over several weeks, the committer is either directly involved or there was some quite severe compromise of their system,” an official with distributor OpenWall wrote in an advisory. “Unfortunately the latter looks like the less likely explanation, given they communicated on various lists about the ‘fixes’” provided in recent updates. Those updates and fixes can be found here, here, here, and here.

On Thursday, someone using the developer's name took to a developer site for Ubuntu to ask that the backdoored version 5.6.1 be incorporated into production versions because it fixed bugs that caused a tool known as Valgrind to malfunction.

“This could break build scripts and test pipelines that expect specific output from Valgrind in order to pass,” the person warned, from an account that was created the same day.

One of maintainers for Fedora said Friday that the same developer approached them in recent weeks to ask that Fedora 40, a beta release, incorporate one of the backdoored utility versions.

“We even worked with him to fix the valgrind issue (which it turns out now was caused by the backdoor he had added),” the Ubuntu maintainer said.

He has been part of the xz project for two years, adding all sorts of binary test files, and with this level of sophistication, we would be suspicious of even older versions of xz until proven otherwise.

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[–] [email protected] 3 points 8 months ago (1 children)

Because the way this conversation started was a logical fallacy you weren’t aware of.

You're assuming I'm not aware of the point you're bringing up, again. I am, I'm disagreeing with you and how you're trying to apply it to me.

You’re dragging it too. I know now, you are not one to learn. But can you at least learn from this and move on?

Defending oneself is not 'dragging it too'. I'm literally replying to you stating that I am aware of the point you're stating repeatedly that I'm not aware of, but that I just disagree with you and how you're applying that point to me.

But instead of inquiring as to why I disagree, you're just repeating back more of the same thing.

Let's just agree to disagree on whether the point you're trying to make applies to me or not, and we both move on. It's such a trivial thing for you to keep hammering me on, it makes me wonder if you're just a conflict bot.

[–] [email protected] -3 points 8 months ago

Just the amount of text you wrote which I'll never read shows how you'll always try to prove your point, even if it was based on a fallacy to begin with. Just go and live a life my friend.