typora-free

maintainer irgendwr · 20 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The PKGBUILD installs a prebuilt proprietary Electron/Node.js binary (Typora 0.11.18) sourced from web.archive.org rather than the original vendor host (which is noted as no longer available). While web.archive.org is a reputable archive service and the sha512sum is present and specific, the concern is real: (1) the source is a prebuilt binary blob containing a full Electron runtime plus Node.js modules, not source-compiled code; (2) the original vendor URL is gone, making independent verification harder; (3) web.archive.org snapshots can theoretically be influenced, though in practice Wayback Machine content is stable. The sha512sum does pin the exact file, which significantly mitigates the supply-chain risk. However, the package installs an executed proprietary binary from a non-canonical host with no way to rebuild from source, which is the definition of a medium supply-chain concern. The chmod 4755 on chrome-sandbox (setuid root) is standard Chromium/Electron packaging practice and not itself suspicious. Overall this is a legitimate medium: real concern about binary provenance from a non-official host, partially mitigated by a strong checksum.

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:22 source=("https://web.archive.org/web/20211127121316if_/https://typora.io/linux/$filename")

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 installs a prebuilt proprietary Electron/Node.js binary (Typora 0.11.18) sourced from web.archive.org rather than the original vendor host (which is noted as no longer available). While web.archive.org is a reputable archive service and the sha512sum is present and specific, the concern is real: (1) the source is a prebuilt binary blob containing a full Electron runtime plus Node.js modules, not source-compiled code; (2) the original vendor URL is gone, making independent verification harder; (3) web.archive.org snapshots can theoretically be influenced, though in practice Wayback Machine content is stable. The sha512sum does pin the exact file, which significantly mitigates the supply-chain risk. However, the package installs an executed proprietary binary from a non-canonical host with no way to rebuild from source, which is the definition of a medium supply-chain concern. The chmod 4755 on chrome-sandbox (setuid root) is standard Chromium/Electron packaging practice and not itself suspicious. Overall this is a legitimate medium: real concern about binary provenance from a non-official host, partially mitigated by a strong checksum.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Jonas Bögle <aur@iwr.sh>
    
      2# Contributor: Jonathan Duck <duckbrain30@gmail.com>
    
      3
    
      4# Consider using https://aur.archlinux.org/packages/typora instead
    
      5
    
      6_pkgname=typora
    
      7pkgname="$_pkgname-free"
    
      8pkgver=0.11.18
    
      9pkgrel=4
    
      10pkgdesc="A minimal markdown editor and reader."
    
      11arch=('x86_64')
    
      12filename="typora_${pkgver}_amd64.deb"
    
      13license=('custom:"Copyright (c) 2015 Abner Lee All Rights Reserved."')
    
      14url="https://typora.io/"
    
      15depends=('gtk3' 'libxss')
    
      16optdepends=(
    
      17	'noto-fonts-emoji: Or some other emoji font to see emojis'
    
      18	'pandoc: Import/export for extra file formats')
    
      19provides=("$_pkgname")
    
      20conflicts=("$_pkgname")
    
      21# The original URL is not available anymore
    
      22source=("https://web.archive.org/web/20211127121316if_/https://typora.io/linux/$filename")
    
      23sha512sums=('8933cb4eab13a37719a3771d14a7a3f5951f6bbce06381ffe37ad5bc3029efed3878723427a4e97b83dbc1d7ccc43b31551b0c336663c843f0e685f8a4e2390e')
    
      24
    
      25package() {
    
      26	bsdtar -xf data.tar.xz -C "$pkgdir/"
    
      27	rm -rf "$pkgdir/usr/share/lintian/"
    
      28	chmod 4755 "$pkgdir/usr/share/typora/chrome-sandbox"
    
      29	# Remove write permission for group/other
    
      30	chmod -R go-w "$pkgdir/usr/share/typora/resources/node_modules"
    
      31	sed -i '/Change Log/d' "$pkgdir/usr/share/applications/typora.desktop"
    
      32	find "$pkgdir" -type d -exec chmod 755 {} \;
    
      33}
    
      34

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