microchip-mplabxc-dsc-bin

LOW

maintainer methril 0 votes scanned 2026-09-17 00:27:14.276658

View on AUR

Why flagged

The source is a prebuilt installer from Microchip's official domain (microchip.com), which is the legitimate vendor; despite the non-whitelisted host, this is a standard and expected source for the toolchain, and the checksum is verified.

Triggered rules

Low AI review downgraded a static finding llm_review

The static rules flagged this MEDIUM, but an AI model (qwen/qwen3-235b-a22b-07-25) reviewed the full PKGBUILD and judged it LOW (confidence 95%): The source is a prebuilt installer from Microchip's official domain (microchip.com), which is the legitimate vendor; despite the non-whitelisted host, this is a standard and expected source for the toolchain, and the checksum is verified.

2 higher static findings superseded - not the current verdict (shown for transparency)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:15 source=("https://ww1.microchip.com/downloads/aemDocuments/documents/DEV/ProductDocuments/SoftwareTools/xc-dsc-v$pkgver-full-install-linux64-installer.run")

Medium Privileged / out-of-pacman install (sudoers, setuid, or self-update) privileged_install

The package grants elevated privileges or installs an update path outside pacman: a /etc/sudoers.d rule (often passwordless), a setuid/setgid binary, or a self-update script/service that can fetch and run future code with no checksum verification. The initial install may be verified, but the ongoing privilege + update surface is a real supply-chain / privilege-escalation risk.

PKGBUILD:33 chmod u+s "${pkgdir}${instdir}/bin/xclm"

PKGBUILD

2 offending line(s) highlighted

      1# Maintainer: Rafael Campos Las Heras <methril at gmail dot com>
    
      2
    
      3pkgver=3.31.01
    
      4pkgname=microchip-mplabxc-dsc-bin
    
      5pkgrel=1
    
      6pkgdesc="Microchip's MPLAB XC-DSC C compiler toolchain for their dsPIC33A DSC microcontroller families"
    
      7arch=(x86_64)
    
      8url=http://www.microchip.com/xc-dsc
    
      9license=(custom)
    
      10#depends_i688=(gcc-libs)
    
      11#depends_x86_64=(lib32-gcc-libs)
    
      12makedepends=(bitrock-unpacker)
    
      13
    
      14options=(!strip docs libtool emptydirs !zipman staticlibs)
    
      15source=("https://ww1.microchip.com/downloads/aemDocuments/documents/DEV/ProductDocuments/SoftwareTools/xc-dsc-v$pkgver-full-install-linux64-installer.run")
    
      16sha256sums=('8bcd65a935ae43c4fc406bc8c82b7220b63a63368c824b35b2c488aa97dee556')
    
      17install=$pkgname.install
    
      18
    
      19instdir="/opt/microchip/xc-dsc/v${pkgver}"
    
      20
    
      21PKGEXT='.pkg.tar'
    
      22
    
      23build() {
    
      24  msg2 "Unpacking files from installer"
    
      25  bitrock-unpacker ./xc-dsc-v$pkgver-full-install-linux64-installer.run ./unpacked.vfs
    
      26}
    
      27
    
      28package() {
    
      29  mkdir -p "${pkgdir}${instdir}"
    
      30  mv unpacked.vfs/compiler/programfiles*/* "${pkgdir}${instdir}"
    
      31  mv unpacked.vfs/licensecomponent/LinuxLM/xclmcheck.sh "${pkgdir}${instdir}/bin"
    
      32  mv unpacked.vfs/licensecomponent/xclmBinlinux32/bin/{roam.lic,xclm} "${pkgdir}${instdir}/bin"
    
      33  chmod u+s "${pkgdir}${instdir}/bin/xclm"
    
      34  sed -i "s/<xclm>/<xclm>\n\t<xclm:LicenseDirectory xclm:path=\"\/opt\/microchip\/xclm\/license\/\" \/>/" unpacked.vfs/licensecomponent/xclmBinlinux32/etc/xclm.conf
    
      35  mv unpacked.vfs/licensecomponent/xclmBinlinux32/etc/xclm.conf "${pkgdir}${instdir}/etc"
    
      36  mv unpacked.vfs/licensecomponent/xclmallDocs/doc/* "${pkgdir}${instdir}/docs"
    
      37
    
      38  mv "${pkgdir}${instdir}"/*License.txt "${pkgdir}${instdir}/docs" 2>/dev/null || true
    
      39
    
      40  mkdir -p "$pkgdir/etc/profile.d"
    
      41  echo "export PATH=\"\$PATH\":'${instdir}/bin'" > "${pkgdir}/etc/profile.d/${pkgname}.sh"
    
      42  echo "export XC${_number_of_bits}_TOOLCHAIN_ROOT='${instdir}'" >> "$pkgdir/etc/profile.d/${pkgname}.sh"
    
      43
    
      44  mkdir -p "$pkgdir/usr/share/licenses/$pkgname"
    
      45  ln -s "${instdir}/docs/$(basename "${pkgdir}${instdir}/docs"/*[Ll]icense.txt)" "${pkgdir}/usr/share/licenses/$pkgname/LICENSE"
    
      46}
    
      47

Scan history

Scanned at (UTC)	Severity	Rules
2026-09-17 00:27:14	Low	3
2026-09-16 00:03:17	Low	3
2026-09-15 00:25:31	Low	3
2026-09-14 00:27:57	Low	3
2026-09-13 00:19:54	Low	3
2026-09-12 00:25:17	Low	3
2026-09-11 00:19:22	Low	3
2026-09-10 00:22:44	Low	3
2026-09-09 00:04:09	Low	3
2026-09-08 00:18:08	Low	3
2026-09-07 00:30:15	Low	3
2026-09-06 00:17:06	Low	3
2026-09-05 00:16:27	Low	3
2026-09-04 00:03:13	Low	3
2026-09-03 00:15:47	Low	3
2026-09-02 00:02:31	Low	3
2026-09-01 00:11:19	Low	3
2026-08-31 00:19:57	Low	3
2026-08-30 00:04:14	Low	3
2026-08-29 00:29:17	Low	3