digital-logic-sim-bin

maintainer gro-david · 2 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged A prebuilt x86_64 binary is downloaded from cdn.matix-media.net (a personal/unofficial CDN, not the upstream GitHub releases page) with 'SKIP' for its checksum, meaning there is zero integrity verification. The binary is then made executable and installed to /opt and /usr/bin. This is a genuine supply-chain risk: if the CDN host is compromised or the file is swapped, arbitrary code runs on the user's machine with no way to detect it. Additional issues: the PKGBUILD uses 'sudo' inside package(), which is non-standard and wrong, and the pkgver includes a 'v' prefix which is unconventional. However, there is no evidence of active malice — this looks like a sloppy but not intentionally malicious packaging of a legitimate open-source project (Sebastian Lague's Digital Logic Sim). The medium rating is correct: executed binary from an unofficial host with no checksum.

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:10 source=("dls.zip::https://cdn.matix-media.net/dd/427fcef6" "dls.desktop" "dls-icon.jpg")

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 85%): A prebuilt x86_64 binary is downloaded from cdn.matix-media.net (a personal/unofficial CDN, not the upstream GitHub releases page) with 'SKIP' for its checksum, meaning there is zero integrity verification. The binary is then made executable and installed to /opt and /usr/bin. This is a genuine supply-chain risk: if the CDN host is compromised or the file is swapped, arbitrary code runs on the user's machine with no way to detect it. Additional issues: the PKGBUILD uses 'sudo' inside package(), which is non-standard and wrong, and the pkgver includes a 'v' prefix which is unconventional. However, there is no evidence of active malice — this looks like a sloppy but not intentionally malicious packaging of a legitimate open-source project (Sebastian Lague's Digital Logic Sim). The medium rating is correct: executed binary from an unofficial host with no checksum.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: David Gro <gro.david.d@gmail.com>
    
      2pkgname=digital-logic-sim-bin
    
      3pkgrel=1
    
      4pkgver="v2.1.6"
    
      5pkgdesc="The logic simulation used and developed by Sebastian Lague."
    
      6arch=('x86_64')
    
      7url="https://github.com/SebLague/Digital-Logic-Sim"
    
      8license=("MIT")
    
      9makedepends=("unzip")
    
      10source=("dls.zip::https://cdn.matix-media.net/dd/427fcef6" "dls.desktop" "dls-icon.jpg")
    
      11sha256sums=('SKIP'
    
      12  'a347d30340f3b38cafa156745efef18e768794f73252c8585b2021b4b47b8535'
    
      13  'be3af17e3a63ab19f9526da768e7cdb22242199ea5983593de300e88ba5d202d')
    
      14
    
      15DLAGENTS=("https::/usr/bin/wget --content-disposition -O %o %u")
    
      16
    
      17prepare() {
    
      18  cd "$srcdir"
    
      19
    
      20  # Unzip the zip file
    
      21  unzip "$srcdir/dls.zip" -d "$srcdir/Digital-Logic-Sim"
    
      22}
    
      23
    
      24package() {
    
      25  cd "$srcdir/Digital-Logic-Sim"
    
      26
    
      27  # Install the app to /opt
    
      28  install -d "$pkgdir/opt/dls"
    
      29  cp -r Digital-Logic-Sim/* "$pkgdir/opt/dls/"
    
      30  sudo chmod +x "$pkgdir/opt/dls/Digital-Logic-Sim.x86_64"
    
      31
    
      32  # Create a launcher script in /usr/bin
    
      33  install -d "$pkgdir/usr/bin"
    
      34  cat >"$pkgdir/usr/bin/dls" <<EOF
    
      35#!/bin/bash
    
      36exec /opt/dls/Digital-Logic-Sim.x86_64 "\$@"
    
      37EOF
    
      38  chmod +x "$pkgdir/usr/bin/dls"
    
      39
    
      40  # Install the .desktop file
    
      41  install -Dm644 "$srcdir/dls.desktop" "$pkgdir/usr/share/applications/dls.desktop"
    
      42
    
      43  # Install the icon
    
      44  install -Dm644 "$srcdir/dls-icon.jpg" "$pkgdir/usr/share/pixmaps/dls-icon.jpg"
    
      45}
    
      46

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