hub-kids

MEDIUM

maintainer max.bra 2 votes scanned 2026-09-17 00:27:14.276658

View on AUR

Why flagged

The PKGBUILD downloads a zip from bce.mondadorieducation.it (Mondadori Education, the Italian educational publisher behind HUB Kids/HUB Scuola), extracts a Debian package from it, and installs a prebuilt binary (hub-kids-prod) directly onto the system. The host appears to be the legitimate vendor CDN for Mondadori Education's digital learning platform, not a random personal host, which reduces but does not eliminate the risk. The core concern remains: a prebuilt, closed-source binary is pulled from a vendor CDN with no reproducibility, no upstream signature verification beyond a single sha256sum, and installed as an executable. If the CDN were compromised or the URL silently redirected, arbitrary code would execute. This is a textbook supply-chain medium: not clearly malicious, but an executed binary from a non-distro, non-auditable source. The sha256sum provides some integrity guarantee against in-transit tampering but not against the vendor host itself being compromised or the binary being replaced at source.

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:24 source=(https://bce.mondadorieducation.it/media_educar/contenuti/appdilettura/kidslinux.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 PKGBUILD downloads a zip from bce.mondadorieducation.it (Mondadori Education, the Italian educational publisher behind HUB Kids/HUB Scuola), extracts a Debian package from it, and installs a prebuilt binary (hub-kids-prod) directly onto the system. The host appears to be the legitimate vendor CDN for Mondadori Education's digital learning platform, not a random personal host, which reduces but does not eliminate the risk. The core concern remains: a prebuilt, closed-source binary is pulled from a vendor CDN with no reproducibility, no upstream signature verification beyond a single sha256sum, and installed as an executable. If the CDN were compromised or the URL silently redirected, arbitrary code would execute. This is a textbook supply-chain medium: not clearly malicious, but an executed binary from a non-distro, non-auditable source. The sha256sum provides some integrity guarantee against in-transit tampering but not against the vendor host itself being compromised or the binary being replaced at source.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: max.bra <max dot bra at alice dot it>
    
      2
    
      3pkgname=hub-kids
    
      4pkgver=7.2.385
    
      5pkgrel=1
    
      6pkgdesc="La piattaforma facile, gratuita e innovativa per la didattica digitale."
    
      7arch=('x86_64')
    
      8url="https://www.hubscuola.it/download-app"
    
      9license=('unknown')
    
      10depends=('sdl2' 'unzip')
    
      11optdepends=(
    
      12'chromium: a modern browser for the application to work'
    
      13'firefox: a modern browser for the application to work'
    
      14'google-chrome: a modern browser for the application to work'
    
      15'evince: a pdf viewer'
    
      16'epdfview: a pdf viewer'
    
      17'qpdfview: a pdf viewer'
    
      18'mupdf: a pdf viewer'
    
      19)
    
      20options=(!strip)
    
      21
    
      22_debname=HUB-Kids.deb
    
      23
    
      24source=(https://bce.mondadorieducation.it/media_educar/contenuti/appdilettura/kidslinux.zip)
    
      25sha256sums=('6576a5f73856880a97ad0d5de55492cba2f225fd138240da32b7cb73463f41ea')
    
      26
    
      27prepare() {
    
      28  cd "$srcdir"
    
      29  msg2 "Decompressing Debian package..."
    
      30  ar xv "${_debname}" > /dev/null
    
      31  tar -xf data.tar.zst > /dev/null
    
      32
    
      33  #find ./{etc,usr} -type d -exec chmod 755 '{}' \;
    
      34  find ./usr -type d -exec chmod 755 '{}' \;
    
      35  chmod 755 ./usr/local/bin/hubkids/hub-kids-prod
    
      36}
    
      37
    
      38package() {
    
      39  cd "$srcdir"
    
      40  #cp -dpr --no-preserve=ownership {opt,usr} "$pkgdir"
    
      41  cp -dpr --no-preserve=ownership ./usr "$pkgdir"
    
      42}
    
      43

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