pb2launcher-bin

maintainer cvolton · 0 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The PKGBUILD downloads a prebuilt .deb binary from plazmaburst2.com (the official game domain) and installs it directly. The sha512sum provides integrity verification against tampering in transit, which is a meaningful mitigation. However, the source is a prebuilt binary from a game vendor's own server — not a well-known, audited distribution channel — and the package() function extracts data.tar.xz from the .deb without inspecting or verifying the contents beyond the outer checksum. The binary is executed code installed onto the system. This is a classic AUR binary package pattern: the checksum pins a specific build, but if the upstream host were compromised and the file replaced (with the checksum updated in the PKGBUILD), there would be no secondary verification. The domain is plausibly official for this game, but it is a small indie game site, not a major vendor with a security track record. This fits the standard 'prebuilt binary from an unofficial/personal host' medium-risk profile — not clearly malicious, but a real supply-chain concern.

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:12 source=('https://www.plazmaburst2.com/pb2/PB2Launcher-1.deb')

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 .deb binary from plazmaburst2.com (the official game domain) and installs it directly. The sha512sum provides integrity verification against tampering in transit, which is a meaningful mitigation. However, the source is a prebuilt binary from a game vendor's own server — not a well-known, audited distribution channel — and the package() function extracts data.tar.xz from the .deb without inspecting or verifying the contents beyond the outer checksum. The binary is executed code installed onto the system. This is a classic AUR binary package pattern: the checksum pins a specific build, but if the upstream host were compromised and the file replaced (with the checksum updated in the PKGBUILD), there would be no secondary verification. The domain is plausibly official for this game, but it is a small indie game site, not a major vendor with a security track record. This fits the standard 'prebuilt binary from an unofficial/personal host' medium-risk profile — not clearly malicious, but a real supply-chain concern.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Cvolton < cvolton at cvolton dot eu >
    
      2
    
      3pkgname=pb2launcher-bin
    
      4pkgver=1.0
    
      5pkgrel=1
    
      6pkgdesc="Plazma Burst 2 is a tactical slidescrolling shooter game developed by Eric Gurt."
    
      7arch=( 'x86_64' )
    
      8url="https://www.plazmaburst2.com/"
    
      9license=('custom')
    
      10provides=('pb2launcher')
    
      11DLAGENTS=("https::/usr/bin/curl -A 'Mozilla' -fLC - --retry 3 --retry-delay 3 -o %o %u")
    
      12source=('https://www.plazmaburst2.com/pb2/PB2Launcher-1.deb')
    
      13sha512sums=('b6e440c643c31df4ae0acca4f79f5f9c3ef23ebfa2dfc4a9b200778ac2164f1a2fa1cdd76b8f14a0124799f64c3e2107aa43e264e60a76d9046625934f921019')
    
      14
    
      15package() {
    
      16
    
      17	tar xf data.tar.xz -C "${pkgdir}"
    
      18
    
      19}

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