easytax-ag-2020

maintainer jeremystucki · 2 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The PKGBUILD downloads and installs a prebuilt proprietary binary (a Java-based tax application) from msg-easytax.ch, which is not the official Swiss cantonal government domain (ag.ch). The official URL listed in the 'url' field points to ag.ch, but the actual download comes from msg-easytax.ch — a third-party host. While msg-easytax.ch appears to be the vendor/developer behind the EasyTax software used by multiple Swiss cantons (it follows the pattern <canton>.easytax.ch or msg-easytax.ch/<canton>/), it is not an official government domain. A prebuilt executable installed to /opt and symlinked into /usr/bin from a non-governmental third-party host constitutes a real supply-chain concern: if msg-easytax.ch were compromised, users would execute malicious code. The sha256sum provides some integrity protection against in-transit tampering but not against the source host serving a malicious file. This is a legitimate medium-severity concern — not clearly malicious, but an executed binary from an unofficial host.

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:10 source=("$pkgname-$pkgver.tar.gz::https://msg-easytax.ch/ag/2020/EasyTax2020AG_unix_1_3.tar.gz")

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 and installs a prebuilt proprietary binary (a Java-based tax application) from msg-easytax.ch, which is not the official Swiss cantonal government domain (ag.ch). The official URL listed in the 'url' field points to ag.ch, but the actual download comes from msg-easytax.ch — a third-party host. While msg-easytax.ch appears to be the vendor/developer behind the EasyTax software used by multiple Swiss cantons (it follows the pattern <canton>.easytax.ch or msg-easytax.ch/<canton>/), it is not an official government domain. A prebuilt executable installed to /opt and symlinked into /usr/bin from a non-governmental third-party host constitutes a real supply-chain concern: if msg-easytax.ch were compromised, users would execute malicious code. The sha256sum provides some integrity protection against in-transit tampering but not against the source host serving a malicious file. This is a legitimate medium-severity concern — not clearly malicious, but an executed binary from an unofficial host.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Jeremy Stucki <dev@jeremystucki.ch>
    
      2pkgname=easytax-ag-2020
    
      3pkgver=1.3
    
      4pkgrel=1
    
      5pkgdesc='Proprietary tax software'
    
      6arch=('x86_64')
    
      7url='https://www.ag.ch/de/dfr/steuern/natuerliche_personen/steuererklaerung__easytax/steuererklaerung_easytax1.jsp'
    
      8license=('unknown')
    
      9depends=('jre8-openjdk')
    
      10source=("$pkgname-$pkgver.tar.gz::https://msg-easytax.ch/ag/2020/EasyTax2020AG_unix_1_3.tar.gz")
    
      11sha256sums=('23b5789ac772c1551b95d6db5ee8f143c7dced9e4a00b701740db6f3a6837abd')
    
      12
    
      13package() {
    
      14    mkdir -p "${pkgdir}/opt"
    
      15    mv "${srcdir}/EasyTax2020AG" "${pkgdir}/opt/${pkgname}"
    
      16
    
      17    mkdir -p "${pkgdir}/usr/bin"
    
      18    ln -sf "${pkgdir}/opt/${pkgname}/EasyTax2020_AG" "${pkgdir}/usr/bin/${pkgname}"
    
      19}
    
      20
    
      21

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