quill-chat

MEDIUM

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

View on AUR

Why flagged

The PKGBUILD downloads a prebuilt RPM binary (an Electron app) from a Google Cloud Storage bucket (storage.googleapis.com) under the quill.chat project namespace and installs it directly. Two concerns: (1) sha256sums='SKIP' means there is no integrity verification whatsoever — the binary could be silently replaced or updated at any time without the PKGBUILD reflecting the change, making reproducibility impossible and supply-chain substitution undetectable; (2) the source is a mutable 'Latest' URL (Quill-Latest.rpm) rather than a versioned/pinned artifact, so the downloaded content may not match pkgver=2020.09.18 at any given time. The host itself (storage.googleapis.com/app-releases-dl.quill.chat) is plausibly the official vendor distribution channel for Quill, so this is not clearly malicious, but the combination of an executed binary, no checksum, and a floating 'Latest' URL constitutes a genuine supply-chain risk. This is a real medium-severity concern, not a false positive.

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=('https://storage.googleapis.com/app-releases-dl.quill.chat/linux/Quill-Latest.rpm')

Medium AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 82%): The PKGBUILD downloads a prebuilt RPM binary (an Electron app) from a Google Cloud Storage bucket (storage.googleapis.com) under the quill.chat project namespace and installs it directly. Two concerns: (1) sha256sums='SKIP' means there is no integrity verification whatsoever — the binary could be silently replaced or updated at any time without the PKGBUILD reflecting the change, making reproducibility impossible and supply-chain substitution undetectable; (2) the source is a mutable 'Latest' URL (Quill-Latest.rpm) rather than a versioned/pinned artifact, so the downloaded content may not match pkgver=2020.09.18 at any given time. The host itself (storage.googleapis.com/app-releases-dl.quill.chat) is plausibly the official vendor distribution channel for Quill, so this is not clearly malicious, but the combination of an executed binary, no checksum, and a floating 'Latest' URL constitutes a genuine supply-chain risk. This is a real medium-severity concern, not a false positive.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: tekacs <pkg@tekacs.com>
    
      2
    
      3pkgname=quill-chat
    
      4pkgver=2020.09.18
    
      5pkgrel=1
    
      6pkgdesc='Quill - Messaging for groups and teams that stay focused'
    
      7arch=('x86_64')
    
      8url="https://quill.chat/"
    
      9license=('Proprietary')
    
      10options=('!emptydirs' '!strip')
    
      11depends=('at-spi2-core' 'gtk3' 'libxtst' 'libnotify' 'nss' 'xdg-utils')
    
      12optdepends=('ttf-ms-win10: emoji support')
    
      13
    
      14source=('https://storage.googleapis.com/app-releases-dl.quill.chat/linux/Quill-Latest.rpm')
    
      15sha256sums=('SKIP')
    
      16
    
      17package() (
    
      18    mkdir -p "${pkgdir}/opt/"
    
      19    mkdir -p "${pkgdir}/usr/lib/"
    
      20    mkdir -p "${pkgdir}/usr/share/"
    
      21    cp -r "${srcdir}/opt/." "${pkgdir}/opt/"
    
      22    cp -r "${srcdir}/usr/lib/." "${pkgdir}/usr/lib/"
    
      23    cp -r "${srcdir}/usr/share/." "${pkgdir}/usr/share/"
    
      24)
    
      25

Scan history

Scanned at (UTC)	Severity	Rules
2026-09-17 00:27:14	Medium	2
2026-09-16 00:03:17	Medium	2
2026-09-15 00:25:31	Medium	2
2026-09-14 00:27:57	Medium	2
2026-09-13 00:19:54	Medium	2
2026-09-12 00:25:17	Medium	2
2026-09-11 00:19:22	Medium	2
2026-09-10 00:22:44	Medium	2
2026-09-09 00:04:09	Medium	2
2026-09-08 00:18:08	Medium	2
2026-09-07 00:30:15	Medium	2
2026-09-06 00:17:06	Medium	2
2026-09-05 00:16:27	Medium	2
2026-09-04 00:03:13	Medium	2
2026-09-03 00:15:47	Medium	2
2026-09-02 00:02:31	Medium	2
2026-09-01 00:11:19	Medium	2
2026-08-31 00:19:57	Medium	2
2026-08-30 00:04:14	Medium	2
2026-08-29 00:29:17	Medium	2