5db5-equalizer-vst3-bin

maintainer orphaned · 0 votes · base 5db5-equalizer · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged This PKGBUILD installs prebuilt binary shared libraries (.so files) for an audio plugin from a proprietary vendor (Audio Assault, audioassault.mx). The source is an S3 bucket (5db5public.s3.amazonaws.com) which is a plausible vendor-controlled distribution host for a small audio plugin company, not a random personal bucket. The URL pattern and plugin name are consistent with the vendor's product page linked in the url= field. A sha256 checksum is provided, which mitigates substitution risk at build time. However, the concern is real: prebuilt binary blobs (.so libraries that get loaded into audio hosts) from a non-official package repository, distributed via an S3 bucket with no source code, represent a genuine supply-chain risk — if the S3 object were replaced, users who don't verify checksums would execute arbitrary code. The license is a proprietary EULA. This is a classic medium-severity case: executed binary from an unofficial/vendor-controlled host with no source, but with a checksum and a plausible legitimate vendor connection.

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:11 source=('https://5db5public.s3.amazonaws.com/Equalizer551Linux.zip')

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 installs prebuilt binary shared libraries (.so files) for an audio plugin from a proprietary vendor (Audio Assault, audioassault.mx). The source is an S3 bucket (5db5public.s3.amazonaws.com) which is a plausible vendor-controlled distribution host for a small audio plugin company, not a random personal bucket. The URL pattern and plugin name are consistent with the vendor's product page linked in the url= field. A sha256 checksum is provided, which mitigates substitution risk at build time. However, the concern is real: prebuilt binary blobs (.so libraries that get loaded into audio hosts) from a non-official package repository, distributed via an S3 bucket with no source code, represent a genuine supply-chain risk — if the S3 object were replaced, users who don't verify checksums would execute arbitrary code. The license is a proprietary EULA. This is a classic medium-severity case: executed binary from an unofficial/vendor-controlled host with no source, but with a checksum and a plausible legitimate vendor connection.

PKGBUILD

1 offending line(s) highlighted

      1pkgbase=5db5-equalizer
    
      2pkgname=( ${pkgbase}-{lv2,vst3}-bin )
    
      3pkgver=1.0.0
    
      4pkgrel=2
    
      5arch=('x86_64')
    
      6url="https://audioassault.mx/plugin/Equalizer551"
    
      7license=('EULA')
    
      8depends=('alsa-lib' 'bzip2' 'brotli' 'freetype2' 'glibc' 'graphite' 'harfbuzz' 'keyutils' 'krb5' 'libcurl-gnutls' 'libffi' 'libnghttp2' 'libidn2' 'libp11-kit' 'libpng' 'libpsl' 'libssh2' 'libtasn1' 'libunistring' 'libxau' 'libxcb' 'libx11' 'nettle' 'openssl' 'pcre2' 'zlib' 'zstd')
    
      9makedepends=('xdg-user-dirs')
    
      10provides=('5db5-equalizer')
    
      11source=('https://5db5public.s3.amazonaws.com/Equalizer551Linux.zip')
    
      12sha256sums=('0a4bb2ab6a4d79624b4be04ad74fc05e06515ca9edef33011393d14987897354')
    
      13
    
      14package_5db5-equalizer-lv2-bin() {
    
      15    ## Install LV2 Plugin
    
      16    pkgdesc="British Style EQ (LV2)"
    
      17    groups=('pro-audio' 'lv2-plugins')
    
      18    install -Dm755 "$srcdir/Equalizer551.lv2/Equalizer551.so" "$pkgdir/usr/lib/lv2/Equalizer551.lv2/Equalizer551.so"
    
      19    install -Dm644 "$srcdir/Equalizer551.lv2/dsp.ttl" "$pkgdir/usr/lib/lv2/Equalizer551.lv2/dsp.ttl"
    
      20    install -Dm644 "$srcdir/Equalizer551.lv2/manifest.ttl" "$pkgdir/usr/lib/lv2/Equalizer551.lv2/manifest.ttl"
    
      21    install -Dm644 "$srcdir/Equalizer551.lv2/ui.ttl" "$pkgdir/usr/lib/lv2/Equalizer551.lv2/ui.ttl"
    
      22}
    
      23
    
      24package_5db5-equalizer-vst3-bin() {
    
      25    ## Install VST3 Plugin
    
      26    pkgdesc="British Style EQ (VST3)"
    
      27    groups=('pro-audio' 'vst3-plugins')
    
      28    install -Dm755 "$srcdir/Equalizer551.vst3/Contents/Resources/moduleinfo.json" "$pkgdir/usr/lib/vst3/Equalizer551.vst3/Contents/Resources/moduleinfo.json"
    
      29    install -Dm755 "$srcdir/Equalizer551.vst3/Contents/x86_64-linux/Equalizer551.so" "$pkgdir/usr/lib/vst3/Equalizer551.vst3/Contents/x86_64-linux/Equalizer551.so"
    
      30}
    
      31

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