easytax-ag-2020

MEDIUM

maintainer jeremystucki 2 votes scanned 2026-09-17 00:27:14.276658

View on AUR

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
2026-09-17 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