ctyun-cloud-desk

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

MEDIUM

Why flagged The PKGBUILD downloads a prebuilt binary .deb package from desk.ctyun.cn:8999, which is a non-standard port on what appears to be China Telecom's cloud desktop distribution server. The package is a proprietary cloud desktop client (Ctyun/天翼云电脑) from a major Chinese state-owned telecom operator, so the host is plausibly official/vendor-operated rather than a random personal server. However, the non-standard port 8999 is unusual for a production distribution endpoint, and the package installs a prebuilt binary blob directly without any source build. The sha256sum is present and pinned, which mitigates substitution risk somewhat. The core concern is that this is an executed binary from a non-standard endpoint of a Chinese state telecom, with no source code review possible. This is a genuine supply-chain concern (prebuilt binary, non-standard port, opaque proprietary software) but not evidence of active malice. Medium severity is appropriate.

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:12 "https://desk.ctyun.cn:8999/desktop-prod/software/linux_x86_xc_client_deb/11/64/202000019/CtyunClouddeskUniversal-2.0.0-202000019-amd64-20230721013253xc.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 package from desk.ctyun.cn:8999, which is a non-standard port on what appears to be China Telecom's cloud desktop distribution server. The package is a proprietary cloud desktop client (Ctyun/天翼云电脑) from a major Chinese state-owned telecom operator, so the host is plausibly official/vendor-operated rather than a random personal server. However, the non-standard port 8999 is unusual for a production distribution endpoint, and the package installs a prebuilt binary blob directly without any source build. The sha256sum is present and pinned, which mitigates substitution risk somewhat. The core concern is that this is an executed binary from a non-standard endpoint of a Chinese state telecom, with no source code review possible. This is a genuine supply-chain concern (prebuilt binary, non-standard port, opaque proprietary software) but not evidence of active malice. Medium severity is appropriate.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: zzy-ac <zzy-ac@qq.com>
    
      2
    
      3pkgname=ctyun-cloud-desk
    
      4pkgver=2.0.0
    
      5pkgrel=202000019
    
      6pkgdesc="天翼云电脑linux客户端:天翼云电脑（Ctyun-Laptop）是云计算技术和终端相结合的创新型产品。依托中国电信优质云网资源，结合自主研发的CLINK数据安全传输协议，具备多重数据安全防护机制，实现安全高效的云电脑使用体验。提供一键部署、灵活可配、集中管控能力，广泛应用于办公、教育、医疗等行业使用场景。"
    
      7arch=("x86_64")
    
      8url="https://www.ctyun.cn/"
    
      9license=()
    
      10depends=('gtk3' 'libnotify' 'libxss' 'libxtst' 'xdg-utils' 'libusb'  'pulseaudio' 'lib32-util-linux' 'util-linux-libs' 'opus' 'pixman')
    
      11source=(
    
      12  "https://desk.ctyun.cn:8999/desktop-prod/software/linux_x86_xc_client_deb/11/64/202000019/CtyunClouddeskUniversal-2.0.0-202000019-amd64-20230721013253xc.deb")
    
      13sha256sums=('00324ba0cf4a2fe1e57470f3200fc3096212c988425170649ae8b28e8f1fcaeb')
    
      14
    
      15build() {
    
      16  mkdir -p "${srcdir}/dpkgdir"
    
      17  tar -xvf data.tar.gz -C "${srcdir}/dpkgdir"
    
      18}
    
      19
    
      20package() {
    
      21  cp -r "${srcdir}/dpkgdir"/* "${pkgdir}"
    
      22} 
    
      23

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