securelink

maintainer lingdianshiren · 0 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged This package installs a prebuilt proprietary binary (a .deb) from a non-standard Wangsu CDN host (download-sdwan.wangsu.com) that is plausibly the vendor's own infrastructure, but the software is a closed-source Zero Trust/VPN client with privileged binaries (setuid chrome-sandbox, root-level daemon SecureLink_Client -install) that cannot be audited; the checksum is present so the specific artifact is pinned, but the host is not an official well-known release domain and the package has few votes, making supply-chain substitution a realistic concern.

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 source=("https://download-sdwan.wangsu.com/public/securelink/pkg/formal/COMMON/ubuntuX64/SecureLink-ubuntu-x64-${pkgver}-66.deb")

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 70%): This package installs a prebuilt proprietary binary (a .deb) from a non-standard Wangsu CDN host (download-sdwan.wangsu.com) that is plausibly the vendor's own infrastructure, but the software is a closed-source Zero Trust/VPN client with privileged binaries (setuid chrome-sandbox, root-level daemon SecureLink_Client -install) that cannot be audited; the checksum is present so the specific artifact is pinned, but the host is not an official well-known release domain and the package has few votes, making supply-chain substitution a realistic concern.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: lingdianshiren <ldsrwu@foxmail.com>
    
      2pkgname=securelink
    
      3pkgver=3.8.13
    
      4pkgrel=1
    
      5pkgdesc="SecureLink client for Wangsu SDP / Zero Trust secure access (Ubuntu GUI version)"
    
      6arch=('x86_64')
    
      7url="https://www.wangsu.com/app/securelink"
    
      8license=('custom')
    
      9depends=('libnotify' 'libxtst' 'nss' 'dmidecode' 'mesa' 'libappindicator-gtk3')
    
      10options=('!strip')
    
      11install=securelink.install
    
      12source=("https://download-sdwan.wangsu.com/public/securelink/pkg/formal/COMMON/ubuntuX64/SecureLink-ubuntu-x64-${pkgver}-66.deb")
    
      13sha256sums=('5304f18254f6c46fb4e66cf61ed65b73d882d9b5530e4556016051e4df3959b8')
    
      14
    
      15package() {
    
      16    cd "$srcdir"
    
      17
    
      18    # Extract the Debian package
    
      19    ar x "SecureLink-ubuntu-x64-${pkgver}-66.deb"
    
      20
    
      21    # Install payload into the package root
    
      22    bsdtar -xf data.tar.xz -C "$pkgdir"
    
      23
    
      24    # The .deb ships some internal ELF executables without the executable bit,
    
      25    # which causes SecureLink to report error 3313 ("SecureLink_Client blocked
    
      26    # by security software") because the Electron shell cannot spawn them.
    
      27    chmod 755 "$pkgdir/opt/SecureLink/resources/app.asar.unpacked/assets/app-ext/securelink_linux64/bin/SecureLink_Client"
    
      28    chmod 755 "$pkgdir/opt/SecureLink/resources/app.asar.unpacked/assets/app-ext/securelink_linux64/bin/uninstall"
    
      29    chmod 755 "$pkgdir/opt/SecureLink/resources/app.asar.unpacked/assets/app-ext/securelink_linux64/plugin/bin/SecureLink_Agent"
    
      30    chmod 755 "$pkgdir/opt/SecureLink/resources/app.asar.unpacked/assets/app-ext/securelink_linux64/plugin/bin/SecureLink_Core"
    
      31    chmod 755 "$pkgdir/opt/SecureLink/resources/app.asar.unpacked/assets/app-ext/securelink_linux64/plugin/bin/SecureLink_DP"
    
      32    chmod 755 "$pkgdir/opt/SecureLink/resources/app.asar.unpacked/assets/app-ext/securelink_linux64/plugin/bin/SecureLink_Report_Tool"
    
      33    chmod 755 "$pkgdir/opt/SecureLink/resources/app.asar.unpacked/assets/app-ext/securelink_linux64/plugin/bin/hwinfo"
    
      34
    
      35    # Electron's setuid sandbox helper must be owned by root and have the
    
      36    # setuid bit set; otherwise the renderer/GPU sandbox cannot be created.
    
      37    chmod 4755 "$pkgdir/opt/SecureLink/chrome-sandbox"
    
      38
    
      39    # Record the original package name so the install script can feed it to
    
      40    # SecureLink_Client -install without hard-coding the version.
    
      41    install -Dm644 /dev/stdin "$pkgdir/opt/SecureLink/.pkgmeta" <<EOF
    
      42DEB_NAME=SecureLink-ubuntu-x64-${pkgver}-66.deb
    
      43EOF
    
      44
    
      45    # The upstream service file contains shell-style quoting and redirection
    
      46    # that systemd does not parse correctly, so install a corrected version.
    
      47    install -Dm644 /dev/stdin "$pkgdir/usr/lib/systemd/system/securelink.service" <<'EOF'
    
      48[Unit]
    
      49Description=SecureLink Daemon
    
      50After=network.target
    
      51
    
      52[Service]
    
      53Type=simple
    
      54Restart=on-failure
    
      55ExecStart=/opt/SecureLink/resources/app.asar.unpacked/assets/app-ext/securelink_linux64/bin/SecureLink_Client -d
    
      56ExecStop=/bin/kill -HUP $MAINPID
    
      57KillMode=process
    
      58
    
      59[Install]
    
      60WantedBy=multi-user.target
    
      61EOF
    
      62
    
      63    # Create a convenience symlink in /usr/bin
    
      64    install -dm755 "$pkgdir/usr/bin"
    
      65    ln -s /opt/SecureLink/securelink "$pkgdir/usr/bin/securelink"
    
      66}
    
      67

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	3
2026-07-17 00:06:16	MEDIUM	3
2026-07-16 00:05:41	MEDIUM	3
2026-07-15 00:09:25	MEDIUM	3