firstsnow

maintainer linkmauve · 1 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The PKGBUILD downloads a prebuilt AppImage from a project-specific host (dl.salty-salty-studios.com) and executes it during the prepare() phase via `--appimage-extract`. While the sha256sum provides integrity verification, the host is not a standard code-hosting platform (GitHub, GitLab, etc.), meaning if the host is compromised or the checksum is updated maliciously, arbitrary code could execute during the build. The AppImage is a self-contained executable bundle that runs during packaging. This is a genuine supply-chain concern: the source is a binary blob from a personal/project host, executed at build time. However, there is no evidence of active malice, obfuscation, or exfiltration — this is a legitimate indie visual novel game packaged from its official distribution host. The risk is real but not elevated beyond a standard medium: unofficial binary host + executed binary at build time.

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:11 source=('https://dl.salty-salty-studios.com/firstsnow/1.0/[SSS]_First_Snow_v1.0_[linux][382AD630].tar'

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 AppImage from a project-specific host (dl.salty-salty-studios.com) and executes it during the prepare() phase via `--appimage-extract`. While the sha256sum provides integrity verification, the host is not a standard code-hosting platform (GitHub, GitLab, etc.), meaning if the host is compromised or the checksum is updated maliciously, arbitrary code could execute during the build. The AppImage is a self-contained executable bundle that runs during packaging. This is a genuine supply-chain concern: the source is a binary blob from a personal/project host, executed at build time. However, there is no evidence of active malice, obfuscation, or exfiltration — this is a legitimate indie visual novel game packaged from its official distribution host. The risk is real but not elevated beyond a standard medium: unofficial binary host + executed binary at build time.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
    
      2
    
      3pkgname=firstsnow
    
      4pkgver=1.0
    
      5pkgrel=1
    
      6pkgdesc="Prequel spinoff of the visual novel Twofold, focused on Allison and Eileen’s first months in community college"
    
      7arch=('any')
    
      8url="https://firstsnow.salty-salty-studios.com/"
    
      9license=('custom')
    
      10depends=('renpy')
    
      11source=('https://dl.salty-salty-studios.com/firstsnow/1.0/[SSS]_First_Snow_v1.0_[linux][382AD630].tar'
    
      12        'firstsnow')
    
      13sha256sums=('722fe8c84d200fdb4f6482ba6b6a51a133144b19c12c436eeb4606f28b840fd3'
    
      14            '363899f509c23ec65d563415883959a2a9e887a688cfeafbf6e40ade72dbe58c')
    
      15
    
      16prepare() {
    
      17  # Note that this only works on x86_64, but the final package should work on any architecture.
    
      18  ./First\ Snow.AppImage --appimage-extract
    
      19}
    
      20
    
      21package() {
    
      22  install -dm755 "$pkgdir"/usr/share/firstsnow/game
    
      23  install -dm755 "$pkgdir"/usr/share/licenses/firstsnow
    
      24  install -dm755 "$pkgdir"/usr/share/icons
    
      25
    
      26  install -Dm755 firstsnow "$pkgdir"/usr/bin/firstsnow
    
      27  install -Dm644 squashfs-root/firstsnow.desktop "$pkgdir"/usr/share/applications/firstsnow.desktop
    
      28
    
      29  cd squashfs-root/opt/firstsnow
    
      30  install -Dm644 \
    
      31    game/code.rpa \
    
      32    game/dlc_h.rpa \
    
      33    game/presplash.png \
    
      34    game/resources.rpa \
    
      35    game/script_version.txt \
    
      36    game/story.rpa \
    
      37    "$pkgdir"/usr/share/firstsnow/game/
    
      38  install -Dm644 SOUND-CREDITS.txt "$pkgdir"/usr/share/licenses/firstsnow/
    
      39  install -Dm644 game/ui/icon.png "$pkgdir"/usr/share/firstsnow/game/ui/icon.png
    
      40  ln -s ../firstsnow/game/ui/icon.png "$pkgdir"/usr/share/icons/firstsnow.png
    
      41  ln -s ../renpy/renpy "$pkgdir"/usr/share/firstsnow/
    
      42}
    
      43

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