zijiang-pos58-driver

maintainer AlexanderS · 2 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The PKGBUILD downloads a prebuilt binary installer (a self-extracting shell script containing a tar archive) from the official vendor's own domain (zjiang.com), not a personal or third-party host. The vendor URL matches the package's stated upstream. However, the source is a prebuilt binary CUPS filter ('rastertozj58') extracted from a vendor-supplied installer zip, with no source code available for inspection. The sha256sum is pinned, which mitigates substitution risk, but the binary itself is opaque and executed as a CUPS filter (root-adjacent, runs on every print job). This is a classic medium-risk pattern: a closed-source binary from a vendor host installed into a privileged location, not clearly malicious but not auditable. The host being the official vendor site (zjiang.com matches the package URL) reduces supply-chain concern compared to a random personal host, but the prebuilt binary nature keeps this at medium rather than clean.

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=("linux-driver.zip::http://www.zjiang.com/asset/upload/14920711742402.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 binary installer (a self-extracting shell script containing a tar archive) from the official vendor's own domain (zjiang.com), not a personal or third-party host. The vendor URL matches the package's stated upstream. However, the source is a prebuilt binary CUPS filter ('rastertozj58') extracted from a vendor-supplied installer zip, with no source code available for inspection. The sha256sum is pinned, which mitigates substitution risk, but the binary itself is opaque and executed as a CUPS filter (root-adjacent, runs on every print job). This is a classic medium-risk pattern: a closed-source binary from a vendor host installed into a privileged location, not clearly malicious but not auditable. The host being the official vendor site (zjiang.com matches the package URL) reduces supply-chain concern compared to a random personal host, but the prebuilt binary nature keeps this at medium rather than clean.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Alexander Sulfrian <asulfrian at zedat dot fu-berlin dot de>
    
      2
    
      3pkgname='zijiang-pos58-driver'
    
      4pkgver=1.0
    
      5pkgrel=2
    
      6pkgdesc='Driver for the Zijiang POS58 thermal printer'
    
      7arch=('i686' 'x86_64')
    
      8url='http://www.zjiang.com/'
    
      9license=('custom')
    
      10makedepends=('unzip')
    
      11depends=()
    
      12source=("linux-driver.zip::http://www.zjiang.com/asset/upload/14920711742402.zip")
    
      13sha256sums=('8faed310839377a479b62c1285ab3d9601270428e0b362ecd2e7cced02c24d92')
    
      14
    
      15prepare() {
    
      16    # Unpack the installer script
    
      17    if [ $CARCH == "x86_64" ]; then
    
      18        sed -n -e '1,/^exit 0$/!p' Linux*/linux64*/install58 > package.tar.gz
    
      19    else
    
      20        sed -n -e '1,/^exit 0$/!p' Linux*/linux32*/install58 > package.tar.gz
    
      21    fi
    
      22    tar zxf "package.tar.gz"
    
      23}
    
      24
    
      25package() {
    
      26    mkdir -p "${pkgdir}/usr/lib/cups/filter"
    
      27    install "${srcdir}/bin/rastertozj58"  "${pkgdir}/usr/lib/cups/filter/"
    
      28
    
      29    mkdir -p "${pkgdir}/usr/share/cups/model/zijiang/"
    
      30    install -m0644 "${srcdir}/ppd/POS58.ppd" "${pkgdir}/usr/share/cups/model/zijiang/"
    
      31}
    
      32

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