luski-beta-bin

maintainer JacobTech · 1 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged This PKGBUILD downloads a prebuilt binary tarball from a personal/vendor domain (jacobtech.com) via a dynamic API endpoint with SKIP checksum verification, meaning there is no integrity check on the downloaded binary. The binary is a .NET executable that gets installed and executed directly. The combination of: (1) a dynamic URL that can return different content at any time, (2) SKIP md5sums providing zero integrity guarantee, and (3) the pkgver() function making a live network call to determine the version — all from a personal domain — constitutes a genuine supply-chain risk. Any compromise of jacobtech.com or a MITM attack would result in arbitrary code execution on the user's system. This is not clearly malicious, but it is a real medium-severity supply-chain concern: an executed binary from an unofficial/personal host with no checksum verification.

Triggered rules

MEDIUM source=() URL on a non-standard host source_untrusted_domain

One or more source=() URLs point to a host outside the trusted allowlist (github.com, gitlab.com, codeberg.org, pypi.org, …).

PKGBUILD:12 source=("luski-beta.tar.gz::https://www.jacobtech.com/Updater/GetPKG?directory=Luski&branch=Beta&selfcontained=false&platform=linux-x64")

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 72%): This PKGBUILD downloads a prebuilt binary tarball from a personal/vendor domain (jacobtech.com) via a dynamic API endpoint with SKIP checksum verification, meaning there is no integrity check on the downloaded binary. The binary is a .NET executable that gets installed and executed directly. The combination of: (1) a dynamic URL that can return different content at any time, (2) SKIP md5sums providing zero integrity guarantee, and (3) the pkgver() function making a live network call to determine the version — all from a personal domain — constitutes a genuine supply-chain risk. Any compromise of jacobtech.com or a MITM attack would result in arbitrary code execution on the user's system. This is not clearly malicious, but it is a real medium-severity supply-chain concern: an executed binary from an unofficial/personal host with no checksum verification.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: JacobTech <Jacob@JacobTech.com>
    
      2pkgname='luski-beta-bin'
    
      3pkgver=0.0.0.1
    
      4pkgrel=2
    
      5pkgdesc="Simple open source chat app"
    
      6arch=('x86_64')
    
      7url="https://www.jacobtech.com/Luski"
    
      8license=('GPL')
    
      9depends=('dotnet-runtime-8.0' 'curl')
    
      10provides=('luski-beta')
    
      11conflicts=('luski-beta-contained-bin')
    
      12source=("luski-beta.tar.gz::https://www.jacobtech.com/Updater/GetPKG?directory=Luski&branch=Beta&selfcontained=false&platform=linux-x64")
    
      13md5sums=('SKIP')
    
      14
    
      15pkgver() {
    
      16	printf "$(curl -s https://www.jacobtech.com/Updater/GetProgramVersion\?directory\=Luski\&branch\=Beta\&selfcontaind\=false\&platform\=linux-x64)"
    
      17}
    
      18
    
      19package() {
    
      20	cd "${srcdir}"
    
      21	
    
      22	install -dm 755 "$pkgdir"/usr/lib/luski-beta
    
      23	install -dm 755 "$pkgdir"/usr/share/applications
    
      24	install -dm 755 "$pkgdir"/usr/bin
    
      25
    
      26	cp -r ${srcdir}/*  "$pkgdir"/usr/lib/luski-beta/
    
      27	
    
      28	touch "$pkgdir"/usr/bin/luski-beta.sh
    
      29	cd "$pkgdir"/usr/bin
    
      30	echo -n "#!/bin/sh
    
      31exec /usr/lib/luski-beta/Luski \"\$@\"" >> "$pkgdir"/usr/bin/luski-beta.sh
    
      32	ln -s luski-beta.sh luski-beta
    
      33
    
      34	touch "$pkgdir/usr/share/applications/luski beta.desktop"
    
      35	cd "$pkgdir"/usr/share/applications
    
      36	echo -n "[Desktop Entry]
    
      37Name=Luski Beta
    
      38Version=1.0
    
      39GenericName=Luski Beta
    
      40Comment=Luski is a free opensource chat app
    
      41Exec=luski-beta %f
    
      42Terminal=false
    
      43Type=Application" >> "$pkgdir/usr/share/applications/luski beta.desktop"
    
      44
    
      45	
    
      46	chmod 755 "$pkgdir"/usr/bin/luski-beta
    
      47	chmod 755 "$pkgdir"/usr/lib/luski-beta/Luski
    
      48	chmod 755 "$pkgdir"/usr/bin/luski-beta.sh
    
      49}
    
      50

Scan history

Scanned at (UTC)	Severity	Rules
2026-08-03 00:08:14	MEDIUM	2
2026-08-02 00:16:08	MEDIUM	2
2026-08-01 00:11:18	MEDIUM	2
2026-07-31 00:14:10	MEDIUM	2
2026-07-30 00:17:23	MEDIUM	2
2026-07-29 00:25:53	MEDIUM	2
2026-07-28 00:07:28	MEDIUM	2
2026-07-27 00:24:32	MEDIUM	2
2026-07-26 00:07:32	MEDIUM	2
2026-07-25 00:13:44	MEDIUM	2
2026-07-24 00:02:28	MEDIUM	2
2026-07-23 00:14:47	MEDIUM	2
2026-07-22 00:29:32	MEDIUM	2
2026-07-21 00:24:15	MEDIUM	2
2026-07-20 00:19:49	MEDIUM	2
2026-07-19 00:17:08	MEDIUM	2
2026-07-18 00:14:48	MEDIUM	2
2026-07-17 00:06:16	MEDIUM	2
2026-07-16 00:05:41	MEDIUM	2
2026-07-15 00:09:25	MEDIUM	2