caster-demo

MEDIUM

maintainer jose1711 4 votes scanned 2026-09-17 00:27:14.276658

View on AUR

Why flagged

The PKGBUILD downloads a prebuilt binary installer (.bin) from elecorn.com, which is the official upstream vendor site for the Caster game demo. The binary is executed indirectly: it is unzipped (the .bin is actually a self-extracting zip) and the extracted caster.bin is installed and run directly on the user's system. While elecorn.com appears to be the legitimate upstream, it is a small personal/indie developer host with no independent verification mechanism (no GPG signature, only MD5 checksums which are weak). The binary is closed-source proprietary code from a non-major vendor. This is a real supply-chain concern — if the host is compromised or the file is swapped, users execute arbitrary code — but there is no evidence of malice. This fits the medium category: an executed binary from an unofficial/small vendor host without strong integrity guarantees.

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 [ "$CARCH" = "i686" ] && source=(${source[@]} "http://www.elecorn.com/caster3d/data/caster-1.3.1-i386-demo-installer.bin") && md5sums=(${md5sums[@]} 'f6cf4c1cab03f69a399108970cd77a93')

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 binary installer (.bin) from elecorn.com, which is the official upstream vendor site for the Caster game demo. The binary is executed indirectly: it is unzipped (the .bin is actually a self-extracting zip) and the extracted caster.bin is installed and run directly on the user's system. While elecorn.com appears to be the legitimate upstream, it is a small personal/indie developer host with no independent verification mechanism (no GPG signature, only MD5 checksums which are weak). The binary is closed-source proprietary code from a non-major vendor. This is a real supply-chain concern — if the host is compromised or the file is swapped, users execute arbitrary code — but there is no evidence of malice. This fits the medium category: an executed binary from an unofficial/small vendor host without strong integrity guarantees.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: jose <jose1711 [at] gmail (dot) com>
    
      2
    
      3pkgname=caster-demo
    
      4pkgver=1.3.1
    
      5pkgrel=2
    
      6pkgdesc="an intense 3rd person action shooter with massive terrain deformation and explosive attacks (demo version)"
    
      7arch=('i686' 'x86_64')
    
      8url="http://elecorn.com/caster3d/"
    
      9license=("custom:free_demo")
    
      10install="caster-demo.install"
    
      11source=('caster-demo.desktop')
    
      12md5sums=('844c2728d0a31959876bbde3dbb4d151')
    
      13
    
      14[ "$CARCH" = "i686"   ] && source=(${source[@]} "http://www.elecorn.com/caster3d/data/caster-1.3.1-i386-demo-installer.bin") && md5sums=(${md5sums[@]} 'f6cf4c1cab03f69a399108970cd77a93')
    
      15[ "$CARCH" = "x86_64" ] && source=(${source[@]} "http://www.elecorn.com/caster3d/data/caster-1.3.1-amd64-demo-installer.bin") && md5sums=(${md5sums[@]} '38f7e73507125319773bbc852ff75c9c')
    
      16
    
      17noextract=('caster-1.3.1-i386-demo-installer.bin' 'caster-1.3.1-amd64-demo-installer.bin')
    
      18makedepends=('wget' 'unzip')
    
      19depends=('libx11' 'libpng12')
    
      20
    
      21build() {
    
      22true
    
      23}
    
      24
    
      25package() {
    
      26  mkdir -p $pkgdir/usr/{share/caster-demo,bin}
    
      27  cd $srcdir/
    
      28  unzip *bin || true
    
      29  cd data/caster_linux
    
      30  #/bin/tar cf - * | ( cd ../../../pkg/usr/share/caster-demo/; tar xfp - )
    
      31  cp -pR . $pkgdir/usr/share/caster-demo
    
      32(echo "#!/bin/bash
    
      33cd /usr/share/caster-demo
    
      34./caster.bin \"\$@\"") > $pkgdir/usr/bin/caster-demo
    
      35  chmod 755 $pkgdir/usr/bin/caster-demo
    
      36  install -D -m644 caster_icon.png $pkgdir/usr/share/pixmaps/caster_icon.png
    
      37  install -D -m644 $srcdir/caster-demo.desktop $pkgdir/usr/share/applications/caster-demo.desktop
    
      38}
    
      39

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