tamtam

MEDIUM

maintainer incubos 4 votes scanned 2026-09-17 00:27:14.276658

View on AUR

Why flagged

The PKGBUILD downloads a prebuilt binary .deb from desktop.tamtam.chat, which is the official TamTam messenger distribution host (TamTam is a Russian messaging service by Mail.ru Group). The source is a closed-source prebuilt binary extracted and installed directly into the system, with a sha256sum check providing integrity verification against tampering in transit. The concern is real but typical for AUR packages wrapping proprietary messenger binaries: the binary is executed code from a vendor-controlled but non-open-source host, and users must trust the vendor. There is no obfuscation, no unofficial/personal host (this is the vendor's own distribution endpoint), and the checksum is present. This is a standard pattern for proprietary app AUR packages (similar to Slack, Zoom, Teams, etc.). The medium rating is appropriate because it is a closed-source prebuilt binary from a vendor host, not because of any active attack indicator.

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:11 source=("${pkgname}-${pkgver}.deb::https://desktop.tamtam.chat/v${pkgver}/TamTam-amd64.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 binary .deb from desktop.tamtam.chat, which is the official TamTam messenger distribution host (TamTam is a Russian messaging service by Mail.ru Group). The source is a closed-source prebuilt binary extracted and installed directly into the system, with a sha256sum check providing integrity verification against tampering in transit. The concern is real but typical for AUR packages wrapping proprietary messenger binaries: the binary is executed code from a vendor-controlled but non-open-source host, and users must trust the vendor. There is no obfuscation, no unofficial/personal host (this is the vendor's own distribution endpoint), and the checksum is present. This is a standard pattern for proprietary app AUR packages (similar to Slack, Zoom, Teams, etc.). The medium rating is appropriate because it is a closed-source prebuilt binary from a vendor host, not because of any active attack indicator.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Vadim Tsesko <incubos at yandex dot com>
    
      2
    
      3pkgname=tamtam
    
      4pkgver=1.4.15
    
      5pkgrel=1
    
      6pkgdesc='TamTam messenger for linux'
    
      7arch=('x86_64')
    
      8url='https://desktop.tamtam.chat/latest/'
    
      9license=('custom')
    
      10depends=('alsa-lib' 'gtk3' 'libsecret' 'libxss' 'libxtst' 'nss')
    
      11source=("${pkgname}-${pkgver}.deb::https://desktop.tamtam.chat/v${pkgver}/TamTam-amd64.deb")
    
      12sha256sums=('17b546ecd84074fbd8e7cf57a560cbf1f2c76228599776c9b998d706de86f088')
    
      13package() {
    
      14  cd "${srcdir}"
    
      15  tar -xJC "${pkgdir}" -f data.tar.xz
    
      16  mkdir "${pkgdir}/usr/bin"
    
      17  ln -s "/opt/TamTam/${pkgname}" "${pkgdir}/usr/bin/${pkgname}"
    
      18}
    
      19

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