easyconnect-cas

maintainer huj13k4n9 · 1 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged This PKGBUILD downloads and installs a prebuilt proprietary binary (EasyConnect_x64.deb) from download.sangfor.com.cn, a Chinese vendor's domain. While sangfor.com is the legitimate vendor for EasyConnect VPN software, the package installs a closed-source VPN client binary that runs with elevated privileges (VPN software typically requires root/setuid), and the source is a direct vendor download rather than a verified release. The MD5 checksum is present but MD5 is cryptographically weak and insufficient for supply-chain integrity. Additionally, the package builds and installs an older version of pango (1.42.4) from a GNOME FTP mirror into a non-standard path to satisfy the binary's library requirements, which is a legitimate but unusual pattern. The main concern is the prebuilt proprietary VPN binary from a vendor host with only MD5 verification — if the vendor's download server were compromised or the URL redirected, the installed binary would have full network access as a VPN client. This is a genuine medium-severity supply-chain concern, not a false positive.

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=("http://download.sangfor.com.cn/download/product/sslvpn/pkg/linux_01/EasyConnect_x64.deb"
PKGBUILD:13 "http://ftp.acc.umu.se/pub/GNOME/sources/pango/1.42/pango-1.42.4.tar.xz")

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 72%): This PKGBUILD downloads and installs a prebuilt proprietary binary (EasyConnect_x64.deb) from download.sangfor.com.cn, a Chinese vendor's domain. While sangfor.com is the legitimate vendor for EasyConnect VPN software, the package installs a closed-source VPN client binary that runs with elevated privileges (VPN software typically requires root/setuid), and the source is a direct vendor download rather than a verified release. The MD5 checksum is present but MD5 is cryptographically weak and insufficient for supply-chain integrity. Additionally, the package builds and installs an older version of pango (1.42.4) from a GNOME FTP mirror into a non-standard path to satisfy the binary's library requirements, which is a legitimate but unusual pattern. The main concern is the prebuilt proprietary VPN binary from a vendor host with only MD5 verification — if the vendor's download server were compromised or the URL redirected, the installed binary would have full network access as a VPN client. This is a genuine medium-severity supply-chain concern, not a false positive.

PKGBUILD

2 offending line(s) highlighted

      1# Maintainer: huj13k4n9 <huj13k4n9@qq.com>
    
      2
    
      3pkgname=easyconnect-cas
    
      4pkgver=7.6.3.0.86415
    
      5pkgrel=2
    
      6pkgdesc="Accessing CAS's network resources over vpn connection."
    
      7arch=('x86_64')
    
      8url="https://newvpn.arp.cn/com/installClient.html"
    
      9license=('custom')
    
      10conflicts=('easyconnect')
    
      11install=${pkgname}.install
    
      12source=("http://download.sangfor.com.cn/download/product/sslvpn/pkg/linux_01/EasyConnect_x64.deb"
    
      13        "http://ftp.acc.umu.se/pub/GNOME/sources/pango/1.42/pango-1.42.4.tar.xz")
    
      14md5sums=('3d8c1adaf61b01ab49f68e331b0ec0d5'
    
      15         'deb171a31a3ad76342d5195a1b5bbc7c')
    
      16
    
      17depends=('dbus' 'dbus-glib' 'libxrender' 'bash' 'nss' 'libxext' 'glibc' 'libxcursor' 'expat' 'sqlite' 'gtk2' 'harfbuzz' 'libxi' 'libcups' \
    
      18    'libx11' 'cairo' 'at-spi2-core' 'libxcomposite' 'fontconfig' 'pango' 'fribidi' 'libxtst' 'libxrandr' 'libxdamage' 'gdk-pixbuf2' 'libxft' \
    
      19    'libxcb' 'gcc-libs' 'libxfixes' 'zlib' 'nspr' 'alsa-lib' 'libthai' 'glib2' 'freetype2')
    
      20makedepends=('gobject-introspection' 'help2man' 'git' 'meson' 'gi-docgen')
    
      21
    
      22package(){
    
      23        tar xzf data.tar.gz -C "${pkgdir}"
    
      24        tar xf ${srcdir}/pango-1.42.4.tar.xz
    
      25        cd pango-1.42.4
    
      26        ./configure --prefix=/usr
    
      27        make -j$(nproc) && make DESTDIR=${pkgdir}"/usr/share/sangfor/EasyConnect/oldlib/pango" install
    
      28        cd ${pkgdir}
    
      29        sed -i 's/Exec=/Exec=env LD_LIBRARY_PATH=\/usr\/share\/sangfor\/EasyConnect\/oldlib\/pango\/usr\/lib /g' "${pkgdir}/usr/share/applications/EasyConnect.desktop"
    
      30        install -D -m644 "${pkgdir}/usr/share/sangfor/EasyConnect/LICENSES.chromium.html" "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
    
      31}
    
      32

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