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TranscriptImage of a man pointing a gun at his own foot.

Caption: Installing an AUR package without reading it's PKGBUILD.

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[-] NaibofTabr@infosec.pub 133 points 3 weeks ago
[-] Jesus_666@lemmy.world 30 points 3 weeks ago

If you want a bunch of stuff that's not in core or extra and you don't want to intensely babysit the AUR, you could try Chaotic-AUR. It hosts prebuilt packages for a bunch of AUR packages which are actively maintained by the Chaotic team.

I consider it to be more secure than the AUR proper since they actually care for their packages and review nontrivial changes. For instance, the recent takeover attacks didn't hit Chaotic-AUR builds since the changed packages didn't make it past the review.

It's still an unofficial third-party repository and closer to the AUR than to extra but I consider it a major step up.

[-] Zachariah@lemmy.world 15 points 3 weeks ago

Yes, but is it good, neutral, or evil?

[-] basxto@discuss.tchncs.de 9 points 3 weeks ago
[-] muusemuuse@sh.itjust.works 4 points 3 weeks ago

It is colorful socks

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[-] NotSteve_@lemmy.ca 5 points 3 weeks ago

I just recently reinstalled since I didn't feel comfortable with how many AUR packages I had and ive been using ChaoticAUR exclusively now. Can confirm that its a great repo

[-] Azzu@leminal.space 17 points 3 weeks ago* (last edited 3 weeks ago)

I mean how often do you install AUR packages? Usually takes like a minute or so to skim through PKGbuild and the pkg comments and look for obvious issues. And most updates are just a sha hash and version change, taking like 5s to check.

[-] HereIAm@lemmy.world 12 points 3 weeks ago

But wasn't the latest AUR attack from a dependancy in the pkgbuild? Going out of your way to review all the dependencies as well is not really possible by just skimming through the script.

[-] basxto@discuss.tchncs.de 6 points 3 weeks ago* (last edited 3 weeks ago)

I need a better wrapper that shows me diffs since last build. I’m too lazy for this

Also pulling in release messages from git etc would be nice

[-] devfuuu@lemmy.world 6 points 3 weeks ago
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[-] ElectroLisa@piefed.blahaj.zone 79 points 3 weeks ago

STABLE IS FOR HORSES I LOVE GAMBLING

/s

[-] xthexder@l.sw0.com 10 points 3 weeks ago

I wish I could give you a second upvote, that's hilarious πŸ˜‚

[-] deathmetal27@lemmy.world 4 points 3 weeks ago

Well earned upvote, sir/ma'am.

[-] call_me_xale@lemmy.zip 36 points 3 weeks ago

I usually do, but I don't really know what I should be looking for. What are some red flags?

[-] akunohana@piefed.blahaj.zone 46 points 3 weeks ago* (last edited 3 weeks ago)

This video taught me a lot.

Check the list of dependencies. If you really want to vet the package, look through all of the dependencies listed and read their package descriptions on their source page (github, gitlab, codeberg, whathaveyou). Check also the URL, from which makepkg (or yay or whatever) is going to pull some of the data. Is the URL legit?

PKGBUILD of localsend

# Maintainer: NourEddineX  
# Contributor: Nixuge  
# Contributor: Noah Vogt <noah@noahvogt.com>  
# Contributor: SpieringsAE (aarch64 addition)  

# Note: 
# using the .deb instead of the .tar.gz as it already contains the icons as well as the .desktop file.  

pkgname=localsend-bin  
pkgver=1.18.0  
pkgrel=1  
pkgdesc='An open source cross-platform alternative to AirDrop'  

LOOK HERE  
url=https://github.com/localsend/LOCALSEND  
LOOK HERE  

arch=('x86_64' 'aarch64')  
license=(Apache-2.0)  

LOOK HERE  
depends=(fuse2 xdg-user-dirs libayatana-appindicator)  
LOOK HERE  

conflicts=('localsend')  
provides=('localsend')  
options=(!debug)  
source_x86_64=("${url}/releases/download/v${pkgver}/LocalSend-${pkgver}-linux-x86-64.deb")  
source_aarch64=("${url}/releases/download/v${pkgver}/LocalSend-${pkgver}-linux-arm-64.deb")  
sha256sums_x86_64=('dae68192ad43a59a68df06454eb5fa4e9a9f86a343fe430165efd8b18863d0f4')  
sha256sums_aarch64=('eb24e724fbdf830c8fb07dfc66b76b8a649923d083278305a63d5d539db4b606')  
_pkgdesktop="localsend_app.desktop"  


prepare() {  
	tar -xf data.tar.zst  
}  

build() {  
	sed -i -E \  
		"s|Exec=localsend_app|Exec=localsend|" \  
		"${srcdir}/usr/share/applications/${_pkgdesktop}"  

	# Adjust .desktop to have it point to the correct icon  
	sed -i -E 's/^Icon=.+/Icon=localsend/' "${srcdir}/usr/share/applications/${_pkgdesktop}"  
}  

package() {  
	# Desktop  
	install -Dm644 "${srcdir}/usr/share/applications/${_pkgdesktop}" "${pkgdir}/usr/share/applications/${pkgname%-*}.desktop" 
	

	# Icons  
	install -dm644 "${pkgdir}/usr/share/icons/"  
	cp -a "${srcdir}/usr/share/icons" "${pkgdir}/usr/share"  
	# Dirty - rename icons to localsend  
	for res in "128x128" "256x256"; do  
		mv "${pkgdir}/usr/share/icons/hicolor/${res}/apps/localsend_app.png" "${pkgdir}/usr/share/icons/hicolor/${res}/apps/localsend.png"  
	done  


	# Executable  
	install -dm755 "${pkgdir}/opt/${pkgname%-*}/"  
	cp -a "${srcdir}/opt/localsend_app/." "${pkgdir}/opt/${pkgname%-*}"  
	# Same as icons - rename to localsend  
	mv "${pkgdir}/opt/${pkgname%-*}/localsend_app" "${pkgdir}/opt/${pkgname%-*}/localsend"  

	# Symlink executable  
	install -dm755 "${pkgdir}/usr/bin"  
	ln -s \  
		"/opt/${pkgname%-*}/${pkgname%-*}" \  
		"${pkgdir}/usr/bin/${pkgname%-*}"  
}  

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[-] Malix@sopuli.xyz 26 points 3 weeks ago* (last edited 3 weeks ago)

as the other commenter said, but worth echoing:

  • is it suddenly using npm to install/run something? (iirc this was the attack vector for most packages that were infected)
  • suddenly added some weird extra wget/curl/whatever to packaging methods to fetch something weird?
  • are the package's sources (eg. github urls) legit?

Generally you should be aware of who'se software you're installing -> check if it's downloading the stuff from right place, and nothing extra. The PKGBUILD changes in the aur website are pretty good indicator if something has changed and how.

edit: npm itself, or it's usage isn't bad - but it is quite suspicious if the AUR package isn't for some webapp or so.

[-] First_Thunder@lemmy.zip 13 points 3 weeks ago

Suddenly an npm command to some random package appearing in an update

[-] dwt@feddit.org 12 points 3 weeks ago

I think that the whole concept of sharing user repos to install packages is sadly not really good anymore. Because now it suddenly exposes that there is usually neither a trust anchor to that repo, nor an established review and fix process for such things.

Iβ€˜d say, just use the community maintained official package sources for now.

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[-] merc@sh.itjust.works 21 points 3 weeks ago
[-] Nalivai@lemmy.world 15 points 3 weeks ago

I'm running Arch daily since 2015, was on Debian before. I install and try a lot of stuff. Never had anything bad happened to me once. Worst case scenario the shit I just installed didn't work so I have to debug it.
Not endorsing this apparently dangerous lifestyle, but also a little bit maybe

[-] Funkt4st1c@lemmy.world 5 points 3 weeks ago

Yeah same. Aur has been significantly less virus prone than the windows norm (inb4 wut abut winget >;ppp) of "Googling some shit you want and clicking the first website to roll the dice on predatory ads or malware or maybe the thing you wanted"

...not to mention if you have btrfs you can just rollback a month or two and call it a day.

[-] deathmetal27@lemmy.world 4 points 3 weeks ago

This is more important after the recent news of malware on AUR

[-] basxto@discuss.tchncs.de 3 points 3 weeks ago

Not updating AUR packages saved me from the last incedent πŸ™ƒI had 6 or sth packages installed who were in the list

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[-] richardisaguy@lemmy.world 11 points 3 weeks ago* (last edited 3 weeks ago)

Nah, if you really want to live on the bleeding edge you gotta make blindly installing vibecoded junk from shady parts of the AUR part of your workflow

[-] zitrone@europe.pub 10 points 3 weeks ago

just use nix instead

we have super secure mechanisms in place to prevent supply chain attacks

/s (nix just hasn't been targeted yet (as far as we know πŸ’€πŸ’€))

[-] corsicanguppy@lemmy.ca 5 points 3 weeks ago

just use nix instead

Maslow, is this your hammer?

[-] Euphoma@lemmy.ml 5 points 3 weeks ago

Yeah, I just update all 20 flakes that I sourced from github and pray that none of them were hacked

[-] chortle_tortle@mander.xyz 3 points 3 weeks ago

/s (nix just hasn’t been targeted yet (as far as we know πŸ’€πŸ’€))

Isn't the real security through obscurity just being such a fringe market no one bothers? πŸ€”

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[-] MonkderVierte@lemmy.zip 9 points 3 weeks ago

All pointing with fingers to AUR, but the issue was (yet again) with NPM.

[-] chortle_tortle@mander.xyz 4 points 3 weeks ago* (last edited 3 weeks ago)

Sorry I missed something, how so?

[-] MonkderVierte@lemmy.zip 6 points 3 weeks ago

The compromised packages load a script from thr net that runs a compromised npm package ("atomic-lockfile" 1.4.2).

Ok, also a AUR issue. But more so a NPM one, since they have all full moon two supply-chain attacks.

[-] MalReynolds@slrpnk.net 8 points 3 weeks ago

If possible do it in a distrobox and down networking before running, yes that won't stop the curl | sh in the install, but at least you can blow it away without hurting your main install and it will likely infect only the distrobox. Bonus points for an immutable main OS.

As the whole supply chain attack vector gets more sophisticated, and probably subtler in effect, these are going to be harder and harder to spot and likely start making it into main repos. Keep sharp people.

Not real fun for a linuxmemes post, but I think it needs saying.

[-] Neptr@lemmy.blahaj.zone 7 points 3 weeks ago

Distrobox is not an isolated environment, it is quite the opposite. They say so themselves on their page:

Security implications

Isolation and sandboxing are not the main aims of the project, on the contrary it aims to tightly integrate the container with the host. The container will have complete access to your home, pen drive, and so on, so do not expect it to be highly sandboxed like a plain docker/podman container or a Flatpak.

I would argue that Docker isn't a good way to stop malware either, since it is highly vulnerable to sandbox escape leveraging the shared host-guest kernel, like the many of LPEs that have been found in the last few months (example using copy-fail).

Docker is not a secure sandbox, Podman is not a secure sandbox, Flatpak is not a secure sandbox. Use a VM, or better yet, don't use the AUR.

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[-] Sivecano@lemmy.dbzer0.com 7 points 3 weeks ago

Someone put my WM on the AUR. I am thus proud to be authoring malware :)

[-] RustyNova@lemmy.world 6 points 3 weeks ago

I don't even read the nix files I install from lol

[-] KernelTale@programming.dev 6 points 3 weeks ago

If it's endorsed by the project team I might as well. At that point it's the same as downloading from GitHub and if I am in AUR I've probably not found it in standard repos nor flathub.

[-] OR3X@lemmy.world 5 points 3 weeks ago

AUR Arch UrGettingMalware Repository

[-] wilmo@programming.dev 4 points 3 weeks ago

I use Arch without touching this AUR in my latest install. Just use what's in the main package repos or flathub

[-] unknownman@lemmy.zip 4 points 2 weeks ago

I use arch just to be able to use AUR lol

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[-] MonkderVierte@lemmy.zip 3 points 3 weeks ago

Update your desktop only all one or two weeks, get basic protection (adblocker, hosts file), read the news.

It's a peaceful life.

[-] corsicanguppy@lemmy.ca 3 points 3 weeks ago

without reading [it is] pkgbuild

I didn't know it was.

[-] Kangae_Hishiryo@scribe.disroot.org 3 points 3 weeks ago* (last edited 3 weeks ago)

I once found a Rust program that streamlined the PKGBUILD reviewing process a lot by, first of all, giving you a really neat list of patterns and behaviours that would make a PKGBUILD suspicios or even plain dangerous, then having a scriptable rule-based engine that would either abort that operation, or show warns and workarounds to you.

I forgot its name, unfortunately, and I installed it on my previous installation (Garuda, now I'm on CachyOS).

Very dumb of my part not to try to write that down before the OS change lol.

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this post was submitted on 14 Aug 2026
394 points (97.6% liked)

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