lexmark_pro700

maintainer jansvendsen · 5 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The PKGBUILD downloads a self-extracting shell script (.rpm.sh.tar.gz) from downloads.lexmark.com and executes it during prepare() with 'sh lexmark-inkjet-legacy-1.0-1.${_arch}.rpm.sh --noexec --target'. While downloads.lexmark.com is the official Lexmark download server (a legitimate vendor host), the payload is a prebuilt binary shell-script installer that gets executed directly. The MD5 checksums provide some integrity verification, though MD5 is weak. The domain is the official Lexmark downloads subdomain, not a personal or unofficial host, which reduces the supply-chain concern somewhat. However, executing a prebuilt binary shell script installer (even with --noexec to extract rather than install) from any external host, combined with only MD5 verification, represents a genuine medium-level concern: if the upstream file were replaced or the host compromised, arbitrary code would execute during the build. This is a real but not clearly malicious supply-chain pattern — consistent with a MEDIUM rating.

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:20 source=("http://downloads.lexmark.com/downloads/cpd/lexmark-inkjet-legacy-1.0-1.${_arch}.rpm.sh.tar.gz")

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 60%): The PKGBUILD downloads a self-extracting shell script (.rpm.sh.tar.gz) from downloads.lexmark.com and executes it during prepare() with 'sh lexmark-inkjet-legacy-1.0-1.${_arch}.rpm.sh --noexec --target'. While downloads.lexmark.com is the official Lexmark download server (a legitimate vendor host), the payload is a prebuilt binary shell-script installer that gets executed directly. The MD5 checksums provide some integrity verification, though MD5 is weak. The domain is the official Lexmark downloads subdomain, not a personal or unofficial host, which reduces the supply-chain concern somewhat. However, executing a prebuilt binary shell script installer (even with --noexec to extract rather than install) from any external host, combined with only MD5 verification, represents a genuine medium-level concern: if the upstream file were replaced or the host compromised, arbitrary code would execute during the build. This is a real but not clearly malicious supply-chain pattern — consistent with a MEDIUM rating.

PKGBUILD

1 offending line(s) highlighted

      1# Contributor: Zeph <zeph33@gmail.com>
    
      2# For Lexmark Pro700 Series
    
      3pkgname=lexmark_pro700
    
      4pkgver=1.0
    
      5pkgrel=2
    
      6pkgdesc="Lexmark Pro700 Series Printer Driver"
    
      7makedepends=('rpmextract' 'gzip' 'bash')
    
      8depends=('java-runtime' 'cups' 'libstdc++5' 'lua')
    
      9arch=('x86_64' 'i686')
    
      10license=('Freeware')
    
      11if [[ $CARCH == i686 ]]; then
    
      12	_arch='i386'
    
      13	md5sums=('421a5461e8cc04f1b838d23e868448fc')
    
      14else
    
      15	_arch='x86_64'
    
      16	md5sums=('fc421f21e50a40a4ba482c0b04f17b84')
    
      17fi
    
      18install=lexmark_pro700.install
    
      19url="http://www.lexmark.com/"
    
      20source=("http://downloads.lexmark.com/downloads/cpd/lexmark-inkjet-legacy-1.0-1.${_arch}.rpm.sh.tar.gz")
    
      21
    
      22prepare() {
    
      23#  cd $startdir/src
    
      24#  tar xf lexmark-inkjet-legacy-1.0-1.x86_64.rpm.sh.tar.gz
    
      25  cd ${srcdir}
    
      26  sh lexmark-inkjet-legacy-1.0-1.${_arch}.rpm.sh --noexec --target Installer-Files
    
      27  cd Installer-Files
    
      28  mkdir Driver
    
      29  tar xvvf instarchive_all --lzma -C Driver/
    
      30  cd Driver
    
      31  rpmextract.sh lexmark-inkjet-legacy-1.0-1.${_arch}.rpm
    
      32  rpmextract.sh lexmark-legacy-wsu-1.0-1.${_arch}.rpm
    
      33}
    
      34
    
      35package(){
    
      36	mv -f ${srcdir}/Installer-Files/Driver/usr ${pkgdir}/
    
      37}
    
      38

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