brother-dcp540cn-cups-bin

maintainer Mutzman · 0 votes · scanned 2026-08-03 00:08:14.047287

LOW

Why flagged The source is a prebuilt i386 Debian package downloaded directly from download.brother.com, which is Brother's official download server (same domain used by all Brother Linux driver packages). A valid md5sum is provided. The binary is a CUPS wrapper driver blob, which is typical for proprietary printer drivers in the AUR (brother-*, brlaser, etc.). While it is a binary blob with no source review possible, this is standard practice for vendor printer drivers and the host is the official vendor CDN, not a personal or unofficial mirror. The PKGBUILD itself is minimal and straightforward. The main concern is the use of MD5 (weak hash) rather than SHA256, and the binary-only nature of the driver, but neither constitutes a supply-chain attack. Rating: low (sloppy/non-standard checksum algorithm, binary blob, but from official vendor host).

Triggered rules

LOW AI review downgraded a static finding llm_review

The static rules flagged this MEDIUM, but an AI model (anthropic/claude-4.6-sonnet-20260217) reviewed the full PKGBUILD and judged it LOW (confidence 85%): The source is a prebuilt i386 Debian package downloaded directly from download.brother.com, which is Brother's official download server (same domain used by all Brother Linux driver packages). A valid md5sum is provided. The binary is a CUPS wrapper driver blob, which is typical for proprietary printer drivers in the AUR (brother-*, brlaser, etc.). While it is a binary blob with no source review possible, this is standard practice for vendor printer drivers and the host is the official vendor CDN, not a personal or unofficial mirror. The PKGBUILD itself is minimal and straightforward. The main concern is the use of MD5 (weak hash) rather than SHA256, and the binary-only nature of the driver, but neither constitutes a supply-chain attack. Rating: low (sloppy/non-standard checksum algorithm, binary blob, but from official vendor host).

1 higher static finding superseded - not the current verdict (shown for transparency)

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://download.brother.com/welcome/dlf005469/dcp540cncupswrapper-1.0.1-1.i386.deb")

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Richard Mutze <richard.mutze@gmail.com>
    
      2
    
      3pkgname=brother-dcp540cn-cups-bin
    
      4pkgver=1.0.1
    
      5pkgrel=1
    
      6pkgdesc="CUPS wrapper for Brother DCP-540CN printer"
    
      7arch=("i686" "x86_64")
    
      8url="https://support.brother.com/g/b/producttop.aspx?c=de&lang=de&prod=dcp540cn_all"
    
      9license=("EULA")
    
      10groups=("base-devel")
    
      11source=("https://download.brother.com/welcome/dlf005469/dcp540cncupswrapper-1.0.1-1.i386.deb")
    
      12md5sums=("918f620ee9adda398c0892efb52ed0e6")
    
      13
    
      14package() {
    
      15	tar -xf data.tar.gz -C "${pkgdir}"
    
      16}
    
      17

Scan history

Scanned at (UTC)	Severity	Rules
2026-08-03 00:08:14	LOW	2
2026-08-02 00:16:08	LOW	2
2026-08-01 00:11:18	LOW	2
2026-07-31 00:14:10	LOW	2
2026-07-30 00:17:23	LOW	2
2026-07-29 00:25:53	LOW	2
2026-07-28 00:07:28	LOW	2
2026-07-27 00:24:32	LOW	2
2026-07-26 00:07:32	LOW	2
2026-07-25 00:13:44	LOW	2
2026-07-24 00:02:28	LOW	2
2026-07-23 00:14:47	LOW	2
2026-07-22 00:29:32	LOW	2
2026-07-21 00:24:15	LOW	2
2026-07-20 00:19:49	LOW	2
2026-07-19 00:17:08	LOW	2
2026-07-18 00:14:48	LOW	2
2026-07-17 00:06:16	LOW	2
2026-07-16 00:05:41	LOW	2
2026-07-15 00:09:25	LOW	2