riichi-city-bin

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

MEDIUM

Why flagged The package installs a prebuilt Unity game binary (Mahjong-JP.x86_64) plus native shared libraries (UnityPlayer.so, GameAssembly.so) downloaded from a CloudFront CDN URL (d3qgi0t347dz44.cloudfront.net). While CloudFront is a legitimate CDN service, this specific distribution URL is not a well-known official vendor release endpoint that can be independently verified against a canonical upstream source. The sha256sums are present and pin the download, which mitigates tampering risk somewhat, but the origin is an opaque CDN bucket rather than a verifiable official release page. The core concern is that prebuilt native binaries and shared libraries from an unverifiable host represent a real supply-chain risk — if the CDN bucket is compromised or the maintainer's pinned hash is updated to a malicious version, arbitrary code executes on the user's system. This is a textbook medium-severity supply-chain concern: executed native code from a non-canonical, non-publicly-auditable host. The icon is pure data (PNG) and the PDF license is data-only, so those are not concerns. The desktop file and install script are locally bundled. Overall: medium severity, no piracy or broken flags.

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:15 "icon.png::https://www.mahjong-jp.com/static/img/tool/download/role11/awaken_5.png"
PKGBUILD:16 "riichi-city-bin-${pkgver}.zip::https://d3qgi0t347dz44.cloudfront.net/release/linuxpack/default_prod_Linux_${pkgver}.zip"

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 72%): The package installs a prebuilt Unity game binary (Mahjong-JP.x86_64) plus native shared libraries (UnityPlayer.so, GameAssembly.so) downloaded from a CloudFront CDN URL (d3qgi0t347dz44.cloudfront.net). While CloudFront is a legitimate CDN service, this specific distribution URL is not a well-known official vendor release endpoint that can be independently verified against a canonical upstream source. The sha256sums are present and pin the download, which mitigates tampering risk somewhat, but the origin is an opaque CDN bucket rather than a verifiable official release page. The core concern is that prebuilt native binaries and shared libraries from an unverifiable host represent a real supply-chain risk — if the CDN bucket is compromised or the maintainer's pinned hash is updated to a malicious version, arbitrary code executes on the user's system. This is a textbook medium-severity supply-chain concern: executed native code from a non-canonical, non-publicly-auditable host. The icon is pure data (PNG) and the PDF license is data-only, so those are not concerns. The desktop file and install script are locally bundled. Overall: medium severity, no piracy or broken flags.

PKGBUILD

2 offending line(s) highlighted

      1# Maintainer: _ <_@_._>
    
      2
    
      3pkgname=riichi-city-bin
    
      4pkgver=2.2.1
    
      5pkgrel=1
    
      6pkgdesc="Competitive urban-style Japanese mahjong platform"
    
      7arch=('x86_64')
    
      8url="https://www.mahjong-jp.com"
    
      9license=('custom')
    
      10provides=('riichi-city')
    
      11conflicts=('riichi-city')
    
      12depends=('libsecret')
    
      13install="${pkgname}.install"
    
      14source=("riichi-city.desktop"
    
      15        "icon.png::https://www.mahjong-jp.com/static/img/tool/download/role11/awaken_5.png"
    
      16        "riichi-city-bin-${pkgver}.zip::https://d3qgi0t347dz44.cloudfront.net/release/linuxpack/default_prod_Linux_${pkgver}.zip"
    
      17        "riichi-city-terms.pdf"
    
      18        "riichi-city-bin.install")
    
      19sha256sums=('4f8204227f3f7548a277df299b634dc5e7e5dba4de5742c04abb5abaf49dc720'
    
      20            '796cbe29af70f4b5067cbd224b66f717d910c6102addae526afc880baebf9a61'
    
      21            '81389cdf0bf3e5261d49d54eab416b45bea3fa2fb82b040dbbab1837b496aef7'
    
      22            'd1efb5dec4c56b1fd2d89b966e0096a2817767c3884a499ae33f116ab5f78fd5'
    
      23            '67d96ee52403a766834e5ef33a862342bece9632fcd8eb4f1ab021094ca4b8d4')
    
      24
    
      25package() {
    
      26    install -Dm644 "${srcdir}/riichi-city.desktop" "${pkgdir}/usr/share/applications/riichi-city.desktop"
    
      27    install -Dm644 "${srcdir}/icon.png" "${pkgdir}/usr/share/pixmaps/riichi-city.png"
    
      28    install -Dm644 riichi-city-terms.pdf "$pkgdir/usr/share/licenses/$pkgname/LICENSE.pdf"
    
      29
    
      30    basedir="${pkgdir}/opt/riichi-city/"
    
      31    install -d "${basedir}" "${pkgdir}/usr/bin"
    
      32    cd "${srcdir}/default_prod_Linux_${pkgver}"
    
      33    cp -a "Mahjong-JP_Data" "${basedir}/"
    
      34    install -Dm755 Mahjong-JP.x86_64 "${basedir}/Mahjong-JP"
    
      35    ln -s "/opt/riichi-city/Mahjong-JP" "${pkgdir}/usr/bin/riichi-city"
    
      36    install -Dm644 UnityPlayer.so "${basedir}/UnityPlayer.so"
    
      37    install -Dm644 GameAssembly.so "${basedir}/GameAssembly.so"
    
      38}
    
      39

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