pencil-dev-bin

maintainer v1cferr · 3 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged This PKGBUILD downloads a prebuilt binary tarball (an Electron application) directly from pencil.dev — the official vendor domain for this product. The sha256sum is pinned, which mitigates casual tampering, but the tarball is a prebuilt executable bundle (Electron/Chromium-based) installed to /opt and run directly. The supply-chain risk is real but typical for -bin AUR packages: if the vendor's download URL were compromised or the domain hijacked, users would execute arbitrary code. The URL is the official vendor site (not a personal/random host), the checksum is present, and the pattern is standard for proprietary Electron app packaging in the AUR. This is a genuine medium-severity supply-chain concern (prebuilt binary from a third-party host with no reproducibility), but not an active attack or clearly malicious pattern.

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:14 source=("${pkgname}-${pkgver}.tar.gz::https://www.pencil.dev/download/Pencil-linux-x64.tar.gz"

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 82%): This PKGBUILD downloads a prebuilt binary tarball (an Electron application) directly from pencil.dev — the official vendor domain for this product. The sha256sum is pinned, which mitigates casual tampering, but the tarball is a prebuilt executable bundle (Electron/Chromium-based) installed to /opt and run directly. The supply-chain risk is real but typical for -bin AUR packages: if the vendor's download URL were compromised or the domain hijacked, users would execute arbitrary code. The URL is the official vendor site (not a personal/random host), the checksum is present, and the pattern is standard for proprietary Electron app packaging in the AUR. This is a genuine medium-severity supply-chain concern (prebuilt binary from a third-party host with no reproducibility), but not an active attack or clearly malicious pattern.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Victor Ferreira
    
      2
    
      3pkgname=pencil-dev-bin
    
      4pkgver=1.1.56
    
      5pkgrel=1
    
      6pkgdesc="Design on canvas. Land in code. Increases engineering speed by bringing designing directly into your IDE."
    
      7arch=('x86_64')
    
      8url="https://pencil.dev"
    
      9license=('custom')
    
      10provides=('pencil-dev')
    
      11conflicts=('pencil-dev')
    
      12options=('!strip' '!debug')
    
      13depends=('alsa-lib' 'at-spi2-core' 'cairo' 'dbus' 'expat' 'glib2' 'libcups' 'libdrm' 'libxcomposite' 'libxdamage' 'libxext' 'libxfixes' 'libxkbcommon' 'libxrandr' 'mesa' 'nspr' 'nss' 'pango')
    
      14source=("${pkgname}-${pkgver}.tar.gz::https://www.pencil.dev/download/Pencil-linux-x64.tar.gz"
    
      15        "pencil-dev.desktop"
    
      16        "pencil.png")
    
      17sha256sums=('219933964e4e0d0487f43acef90b5e897cdc3dcbf97b75e4b8258ea7c2f49afc'
    
      18            '73fda772f0429d82e5168ff8de68bfb9ed72ace660758354697f816ba0666a5f'
    
      19            '131ee5d9793ddaca67577727532493fb451a02e0903fc804b93d2142de16b331')
    
      20
    
      21package() {
    
      22    cd "${srcdir}/Pencil-${pkgver}-linux-x64"
    
      23
    
      24    install -d "${pkgdir}/opt/${pkgname}"
    
      25    cp -r * "${pkgdir}/opt/${pkgname}/"
    
      26
    
      27    # Set permissions for chrome-sandbox
    
      28    chmod 4755 "${pkgdir}/opt/${pkgname}/chrome-sandbox"
    
      29
    
      30    # Create binary symlink
    
      31    install -d "${pkgdir}/usr/bin"
    
      32    ln -s "/opt/${pkgname}/pencil" "${pkgdir}/usr/bin/pencil-dev"
    
      33
    
      34    # Install desktop entry
    
      35    install -Dm644 "${srcdir}/pencil-dev.desktop" "${pkgdir}/usr/share/applications/pencil-dev.desktop"
    
      36
    
      37    # Install application icon
    
      38    install -Dm644 "${srcdir}/pencil.png" "${pkgdir}/usr/share/icons/hicolor/512x512/apps/pencil.png"
    
      39}
    
      40

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