dff2dsf

maintainer blackhole · 6 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

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
2026-08-03 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