dff2dsf

MEDIUM

maintainer blackhole 6 votes scanned 2026-09-17 00:27:14.276658

View on AUR

Why flagged

The PKGBUILD downloads a prebuilt x86_64 binary from signalyst.com/bins, which is the official vendor website for the Signalyst DFF2DSF tool (the url= field confirms this is the upstream vendor). The binary is installed directly into /usr/bin without any compilation step. While signalyst.com appears to be the legitimate upstream vendor site, distributing and executing a prebuilt binary from any host — even the official vendor — carries inherent supply-chain risk: there is no source code to audit, no reproducible build, and compromise of the vendor's web server would silently deliver malicious code to users. The sha256sum provides integrity checking against a known-good value but does not protect against the vendor serving a different binary in the future or the host being compromised. This is a classic 'binary blob from vendor' pattern that warrants medium severity: not clearly malicious, but a real code-execution concern since an opaque prebuilt binary is being installed system-wide.

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=('https://signalyst.com/bins/dff2dsf-122.zip')

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 x86_64 binary from signalyst.com/bins, which is the official vendor website for the Signalyst DFF2DSF tool (the url= field confirms this is the upstream vendor). The binary is installed directly into /usr/bin without any compilation step. While signalyst.com appears to be the legitimate upstream vendor site, distributing and executing a prebuilt binary from any host — even the official vendor — carries inherent supply-chain risk: there is no source code to audit, no reproducible build, and compromise of the vendor's web server would silently deliver malicious code to users. The sha256sum provides integrity checking against a known-good value but does not protect against the vendor serving a different binary in the future or the host being compromised. This is a classic 'binary blob from vendor' pattern that warrants medium severity: not clearly malicious, but a real code-execution concern since an opaque prebuilt binary is being installed system-wide.

PKGBUILD

1 offending line(s) highlighted

      1## Maintainer: AudioLinux  <audiolinux AT fastmail DOT fm>
    
      2
    
      3pkgname=dff2dsf
    
      4_debpkgver=1.2.2
    
      5pkgver=$_debpkgver
    
      6pkgrel=3
    
      7pkgdesc="Signalyst DFF to DSF command line conversion utility"
    
      8arch=('x86_64')
    
      9url="https://www.signalyst.com"
    
      10license=('custom')
    
      11depends=('glibc' 'gcc-libs')
    
      12source=('https://signalyst.com/bins/dff2dsf-122.zip')
    
      13sha256sums=('77ae7297ee1a6efe72014c7ebfd68033be40fae0246e10fc35eb7a252dd1f685')
    
      14
    
      15package() {
    
      16 cd "$srcdir"
    
      17 bsdtar -xf dff2dsf-122.zip -C "$srcdir"
    
      18     install -Dm755 "$srcdir/linux-x64/dff2dsf" "$pkgdir/usr/bin/dff2dsf"
    
      19     install -Dm644 "$srcdir/license.txt" "$pkgdir/usr/share/licenses/$pkgname/COPYING"
    
      20}
    
      21

Scan history

Scanned at (UTC)	Severity	Rules
2026-09-17 00:27:14	Medium	2
2026-09-16 00:03:17	Medium	2
2026-09-15 00:25:31	Medium	2
2026-09-14 00:27:57	Medium	2
2026-09-13 00:19:54	Medium	2
2026-09-12 00:25:17	Medium	2
2026-09-11 00:19:22	Medium	2
2026-09-10 00:22:44	Medium	2
2026-09-09 00:04:09	Medium	2
2026-09-08 00:18:08	Medium	2
2026-09-07 00:30:15	Medium	2
2026-09-06 00:17:06	Medium	2
2026-09-05 00:16:27	Medium	2
2026-09-04 00:03:13	Medium	2
2026-09-03 00:15:47	Medium	2
2026-09-02 00:02:31	Medium	2
2026-09-01 00:11:19	Medium	2
2026-08-31 00:19:57	Medium	2
2026-08-30 00:04:14	Medium	2
2026-08-29 00:29:17	Medium	2