superbeam

maintainer a-ludi · 14 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The PKGBUILD downloads a prebuilt binary bundle from superbe.am (the official vendor site for the SuperBeam application) via a numeric download ID URL with no version in the path. The installed artifacts include a shell script (SuperBeam-${pkgver}-linux.sh) and a native binary 'ssl-proxy', both executed at runtime. While superbe.am is the legitimate upstream vendor URL (matching the package url= field), the download URL is opaque (/download/5319) and there is no way to verify it corresponds to the stated version without fetching it. The sha256sum provides integrity protection against tampering in transit, which mitigates the worst supply-chain risk. However, the package installs and executes a prebuilt native binary (ssl-proxy) from a proprietary vendor with no source code available, which is a genuine medium-level concern: if the vendor host is compromised or the binary is malicious, it runs with user privileges. This is a standard AUR pattern for closed-source vendor packages, but the opaque download URL and prebuilt native binary justify keeping the medium rating.

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:16 source=(http://superbe.am/download/5319)

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 72%): The PKGBUILD downloads a prebuilt binary bundle from superbe.am (the official vendor site for the SuperBeam application) via a numeric download ID URL with no version in the path. The installed artifacts include a shell script (SuperBeam-${pkgver}-linux.sh) and a native binary 'ssl-proxy', both executed at runtime. While superbe.am is the legitimate upstream vendor URL (matching the package url= field), the download URL is opaque (/download/5319) and there is no way to verify it corresponds to the stated version without fetching it. The sha256sum provides integrity protection against tampering in transit, which mitigates the worst supply-chain risk. However, the package installs and executes a prebuilt native binary (ssl-proxy) from a proprietary vendor with no source code available, which is a genuine medium-level concern: if the vendor host is compromised or the binary is malicious, it runs with user privileges. This is a standard AUR pattern for closed-source vendor packages, but the opaque download URL and prebuilt native binary justify keeping the medium rating.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Arne Ludwig < arne.ludwig at posteo dot de >
    
      2# Maintainer: Szymon Scholz < szymonscholz at gmail dot com >
    
      3# Contributor: Jo De Boeck <deboeck.jo@gmail.com>
    
      4# Original Maintainer: Julien Humbert <julroy67@gmail.com>
    
      5# Contributor: danyf90
    
      6# Contributor: hermes14
    
      7pkgname=superbeam
    
      8pkgver=5.1.3
    
      9pkgrel=2
    
      10pkgdesc="The easiest and fastest way to share files with Android"
    
      11arch=('any')
    
      12url="http://superbe.am/"
    
      13license=('custom')
    
      14depends=('java-environment' 'java8-openjfx' 'bash')
    
      15makedepends=('gendesk')
    
      16source=(http://superbe.am/download/5319)
    
      17
    
      18prepare(){
    
      19	gendesk -n -f --pkgname "$pkgname" --pkgdesc "$pkgdesc" --name="SuperBeam" --categories="Network"
    
      20	sed -E '/^exec / {
    
      21		i \
    
      22cd /usr/share/superbeam
    
      23	}' \
    
      24		< "$srcdir/SuperBeam-${pkgver}-linux/SuperBeam-${pkgver}-linux.sh" \
    
      25		> "$srcdir/SuperBeam-${pkgver}-linux/SuperBeam-${pkgver}-linux.ssl-proxy-fix.sh"
    
      26}
    
      27
    
      28package() {
    
      29	mkdir -p "$pkgdir/usr/bin"
    
      30	install -Dm755 "$srcdir/SuperBeam-${pkgver}-linux/SuperBeam-${pkgver}-linux.ssl-proxy-fix.sh" "$pkgdir/usr/bin/superbeam"
    
      31	install -Dm755 "$srcdir/SuperBeam-${pkgver}-linux/ssl-proxy" "$pkgdir/usr/share/superbeam/ssl-proxy"
    
      32	install -Dm644 "$srcdir/$pkgname.desktop" "$pkgdir/usr/share/applications/$pkgname.desktop"
    
      33	install -Dm644 "$srcdir/SuperBeam-${pkgver}-linux/SuperBeam.png" "$pkgdir/usr/share/pixmaps/$pkgname.png"
    
      34	install -Dm644 "$srcdir/SuperBeam-${pkgver}-linux/README" "$pkgdir/usr/share/doc/$pkgname/README"
    
      35}
    
      36
    
      37sha256sums=('0b30f4dfbfd5161ebe721874f8c3d669345be12fc2c656ed1cba670fbe532a75')
    
      38

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