pfufs

maintainer akobel · 1 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The PKGBUILD downloads a prebuilt binary Debian package (.deb) from origin.pfultd.com, which is the official Fujitsu/PFU download host for their scanner drivers (pfultd.com is the PFU Ltd. domain used for their global software distribution). The URL structure and domain are consistent with the official Fujitsu fi-series scanner driver distribution infrastructure referenced from the official pfu.ricoh.com product page listed in the 'url' field. The binary is verified with a sha256sum, which mitigates silent substitution attacks. However, this is still a prebuilt binary blob from a vendor CDN rather than source-compiled code, and the host is not a well-known first-party domain like github.com or a major distro mirror. The extracted binary libraries and executables (lib/*, bin/*) are installed directly and executed at runtime. This is a legitimate vendor driver package with checksum verification, making it closer to 'clean' than a genuine supply-chain threat, but the prebuilt binary nature from a less-recognizable vendor CDN (even if official) warrants a medium rating rather than clean, as users must trust the vendor's distribution infrastructure entirely.

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://origin.pfultd.com/downloads/IMAGE/fi/ubuntu/${pkgvernodots}/pfufs-ubuntu_${pkgver}_amd64.deb"

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 Debian package (.deb) from origin.pfultd.com, which is the official Fujitsu/PFU download host for their scanner drivers (pfultd.com is the PFU Ltd. domain used for their global software distribution). The URL structure and domain are consistent with the official Fujitsu fi-series scanner driver distribution infrastructure referenced from the official pfu.ricoh.com product page listed in the 'url' field. The binary is verified with a sha256sum, which mitigates silent substitution attacks. However, this is still a prebuilt binary blob from a vendor CDN rather than source-compiled code, and the host is not a well-known first-party domain like github.com or a major distro mirror. The extracted binary libraries and executables (lib/*, bin/*) are installed directly and executed at runtime. This is a legitimate vendor driver package with checksum verification, making it closer to 'clean' than a genuine supply-chain threat, but the prebuilt binary nature from a less-recognizable vendor CDN (even if official) warrants a medium rating rather than clean, as users must trust the vendor's distribution infrastructure entirely.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Alexander Kobel <a-kobel@a-kobel.de>
    
      2
    
      3pkgname=pfufs
    
      4pkgver=2.8.1
    
      5pkgvernodots=${pkgver//./}
    
      6pkgrel=3
    
      7pkgdesc='Fujitsu fi series Image Scanner Driver for SANE'
    
      8url='https://www.pfu.ricoh.com/global/scanners/fi/dl/ubuntu-fi-7x60.html'
    
      9arch=('x86_64')
    
      10license=('LicenseRef-ImageScannerDriverEULA')
    
      11depends=('sane' 'libxml2-legacy')
    
      12source=("https://origin.pfultd.com/downloads/IMAGE/fi/ubuntu/${pkgvernodots}/pfufs-ubuntu_${pkgver}_amd64.deb"
    
      13        "https://origin.pfultd.com/downloads/IMAGE/fi/ubuntu/${pkgvernodots}/P2U3-0200-08ENZ0.pdf"
    
      14        60-pfufs.rules
    
      15	consumablesettings.xml
    
      16        pfufs
    
      17        pfufs.conf
    
      18        pfufs.ini
    
      19        pfufsscanbutton.service
    
      20        simple-scan.conf)
    
      21sha256sums=('92f9edf8e0148dd351faef7858b1e4bc1e2b7f90d18fcc4b6b03a3ca4c4bdcba'
    
      22            '5202321fd8e2a7cb4d1521fce2c0213a22a8e3cd587c0bf61a55d77c3120be77'
    
      23            '618b169c5b3586d7b473ac51171660934a662d3848c881019067477c680b518b'
    
      24            '0b5aba6f2ec085a941dbcd7228e09f5038305ce4ca5a792d8d419353ee90d1fb'
    
      25            '36890d01da19034cfd7f0e8aa40672693cc2b8db2902c6e3755628ee36dd0e61'
    
      26            '08cd978d259749716a153ec94803ac75f7c9a922526d84419d752141d483604c'
    
      27            'af03606af00cd90726b9d4fd5d7ccad1e1209399b7b668e523eedbf5e7c58521'
    
      28            'bd0a75c50f92f66471bb2f3eb969394f0156eae60537a206244bb16f597d2c3d'
    
      29            '6aec8ca879208e25ce8678a9bb0ecf11ccecca3c5e82f6e07b25425a261cc732')
    
      30
    
      31prepare () {
    
      32  cd "$srcdir"
    
      33  tar xf data.tar.xz
    
      34
    
      35  find . -type f -exec chmod 644 '{}' +
    
      36  find . -type f -name 'License*' -exec chmod 444 '{}' +
    
      37  find . -type f -name 'readme*' -exec chmod 444 '{}' +
    
      38  cd opt/pfufs
    
      39  chmod 755 bin/* consumables/* etc/pfufssysinfo.sh lib/* pfufsgetinfo/*
    
      40}
    
      41
    
      42package () {
    
      43  cd "$srcdir"
    
      44
    
      45  install -d "$pkgdir/opt/pfufs/image"
    
      46
    
      47  cp -pR usr/ "$pkgdir/"
    
      48  cp -pR opt/pfufs/*/ "$pkgdir/opt/pfufs/"
    
      49
    
      50  install -vDm 444 -t "$pkgdir/usr/share/doc/$pkgname" opt/pfufs/readme*.txt
    
      51  install -vDm 444 P2U3-0200-08ENZ0.pdf "$pkgdir/usr/share/doc/$pkgname/pfufs.pdf"
    
      52  install -vDm 444 -t "$pkgdir/usr/share/licenses/$pkgname" opt/pfufs/License*.txt
    
      53
    
      54  # from the deb's preinst
    
      55  install -vDm 644 -t "$pkgdir/usr/lib/udev/rules.d" 60-pfufs.rules
    
      56
    
      57  install -vDm 644 -t "$pkgdir/usr/lib/systemd/system" pfufsscanbutton.service
    
      58
    
      59  # from the deb's postinst
    
      60  install -vDm 644 -t "$pkgdir/etc/sane.d/dll.d" pfufs
    
      61  install -vDm 644 -t "$pkgdir/opt/pfufs/etc" consumablesettings.xml pfufs.conf pfufs.ini simple-scan.conf
    
      62
    
      63  install -d "$pkgdir/usr/bin"
    
      64  ln -s -t "$pkgdir/usr/bin" /opt/pfufs/consumables/pfufsconsumables
    
      65  ln -s -t "$pkgdir/usr/bin" /opt/pfufs/pfufsgetinfo/pfufsgetscerror
    
      66  ln -s -t "$pkgdir/usr/bin" /opt/pfufs/pfufsgetinfo/pfufsgetscstatus
    
      67
    
      68  mv "$pkgdir/opt/pfufs/etc" "$pkgdir/etc/pfufs"
    
      69  ln -s /etc/pfufs "$pkgdir/opt/pfufs/etc"
    
      70}
    
      71

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