max-appimage

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

MEDIUM

Why flagged The PKGBUILD downloads a prebuilt AppImage binary from download.max.ru (an unofficial/vendor-specific host, not a well-known official mirror) and executes it during the prepare() phase (--appimage-extract). The binary is then installed as an executable. While MAX is a Russian messenger service and download.max.ru appears to be its official distribution host, it is not a widely recognized or auditable source. The sha256sum provides some integrity protection, but there is no GPG signature verification. The core concern is a closed-source, prebuilt binary executed and installed from a single vendor-controlled host with no independent verification mechanism — a genuine supply-chain risk if the host is compromised or the binary is silently replaced. This fits the medium category: not clearly malicious, but a real code-execution concern from an unofficial/unverifiable binary 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:26 source_x86_64=("http://download.max.ru/electron/${_filename}")

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 AppImage binary from download.max.ru (an unofficial/vendor-specific host, not a well-known official mirror) and executes it during the prepare() phase (--appimage-extract). The binary is then installed as an executable. While MAX is a Russian messenger service and download.max.ru appears to be its official distribution host, it is not a widely recognized or auditable source. The sha256sum provides some integrity protection, but there is no GPG signature verification. The core concern is a closed-source, prebuilt binary executed and installed from a single vendor-controlled host with no independent verification mechanism — a genuine supply-chain risk if the host is compromised or the binary is silently replaced. This fits the medium category: not clearly malicious, but a real code-execution concern from an unofficial/unverifiable binary host.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: KUHTOXO https://aur.archlinux.org/account/kuhtoxo
    
      2
    
      3pkgname=max-appimage
    
      4pkgver=26.1.4.11224
    
      5pkgrel=1
    
      6
    
      7pkgdesc="MAX messenger."
    
      8arch=("x86_64")
    
      9url='https://max.ru'
    
      10license=("custom:max")
    
      11categories=("network")
    
      12provides=("${pkgname%-appimage}")
    
      13conflicts=("${pkgname%-appimage}")
    
      14optdepends=(
    
      15    'libappindicator-gtk3: tray icon'
    
      16    'libayatana-appindicator: tray icon'
    
      17)
    
      18options=('!strip')
    
      19
    
      20_app_name="MAX"
    
      21_filename="${_app_name}.AppImage"
    
      22_squashfs_desktop_file="${_app_name}.desktop"
    
      23_squashfs_icon_file="${_app_name}.png"
    
      24_install_path="/opt/appimages"
    
      25
    
      26source_x86_64=("http://download.max.ru/electron/${_filename}")
    
      27sha256sums_x86_64=('2a62165974fce37f268037823178cfaac4e5f81c215d5df8564109fff7378281')
    
      28
    
      29prepare() {
    
      30    chmod a+x ${srcdir}/${_filename}
    
      31    ${srcdir}/${_filename} --appimage-extract > /dev/null
    
      32    sed -i -E "s|Exec=AppRun|Exec=${_install_path}/${_filename}|" "squashfs-root/${_squashfs_desktop_file}"
    
      33}
    
      34
    
      35package() {
    
      36    install -Dm755 "${srcdir}"/${_filename} "${pkgdir}"/${_install_path}/${_filename}
    
      37
    
      38    # install icons
    
      39    install -dm755 "${pkgdir}/usr/share/icons"
    
      40    cp -dpr --no-preserve=ownership "squashfs-root/usr/share/icons" "${pkgdir}/usr/share"
    
      41    chmod -R 755 "${pkgdir}/usr/share/icons"
    
      42    find "${pkgdir}/usr/share/icons" -type f -name "${_squashfs_icon_file}" -exec chmod 644 {} \;
    
      43
    
      44    # install appication desktop file
    
      45    install -Dm644 "${srcdir}/squashfs-root/${_squashfs_desktop_file}" -t "${pkgdir}/usr/share/applications"
    
      46}
    
      47

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