kontur-diag-plugin

MEDIUM

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

View on AUR

Why flagged

The PKGBUILD downloads a prebuilt RPM binary from api.kontur.ru (SKB Kontur's own API/CDN endpoint) and installs its contents, including executables under /opt set to mode 755. SKB Kontur is a legitimate Russian software company providing cryptographic/PKI services, and api.kontur.ru is their official distribution endpoint, not a personal or unofficial host. However, the package installs prebuilt binaries (browser extension native host / cryptographic library) without source, relying solely on a sha256 checksum for integrity. The checksum provides some protection against transit tampering but not against a compromised upstream host silently replacing the file. The install logic (find+grep+sed+xargs) is unusual but functional — it installs everything except lib64 paths and then chmod 755s everything under /opt, which is a reasonable way to unpack an RPM without rpmextract. This is a genuine medium-risk pattern: executed proprietary binaries from a vendor API endpoint with no source transparency, but not clearly malicious.

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:15 source=("https://api.kontur.ru/drive/v1/public/diag/files/diag.plugin-${pkgver}-${pkgrel}.${arch}.${_patch}.rpm")

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 RPM binary from api.kontur.ru (SKB Kontur's own API/CDN endpoint) and installs its contents, including executables under /opt set to mode 755. SKB Kontur is a legitimate Russian software company providing cryptographic/PKI services, and api.kontur.ru is their official distribution endpoint, not a personal or unofficial host. However, the package installs prebuilt binaries (browser extension native host / cryptographic library) without source, relying solely on a sha256 checksum for integrity. The checksum provides some protection against transit tampering but not against a compromised upstream host silently replacing the file. The install logic (find+grep+sed+xargs) is unusual but functional — it installs everything except lib64 paths and then chmod 755s everything under /opt, which is a reasonable way to unpack an RPM without rpmextract. This is a genuine medium-risk pattern: executed proprietary binaries from a vendor API endpoint with no source transparency, but not clearly malicious.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Lionel Miller <delonorm at gmail dot com>
    
      2# Maintainer: Andrey Kolchenko <andrey@kolchenko.me>
    
      3
    
      4pkgname=kontur-diag-plugin
    
      5pkgver=3.1.2.373
    
      6pkgrel=1
    
      7pkgdesc="Diag.Plugin is an extension for web browsers that allows users to install cryptographic programs for SKB Kontur services."
    
      8arch=('x86_64')
    
      9license=('proprietary')
    
      10depends=('gtk3')
    
      11makedepends=('findutils' 'grep' 'sed' 'coreutils')
    
      12url='https://help.kontur.ru/'
    
      13
    
      14_patch='001814'
    
      15source=("https://api.kontur.ru/drive/v1/public/diag/files/diag.plugin-${pkgver}-${pkgrel}.${arch}.${_patch}.rpm")
    
      16sha256sums=('ed1ae3c20ae8dd8c1c52fe86b1d8dc132f0918fd061debe87dff057b26fdd849')
    
      17
    
      18package() {
    
      19	find "${srcdir}" -type f | grep -v lib64 | sed -e "s#${srcdir}/##g" | xargs -I{} install -Dvm644 "${srcdir}/{}" "${pkgdir}/{}"
    
      20	find "${pkgdir}/opt" -type f | xargs chmod 755
    
      21}
    
      22
    
      23

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