pegdbserver_power

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

MEDIUM

Why flagged The PKGBUILD fetches a prebuilt JAR (containing native Linux binaries under lin/) from pemicro.com at build time inside prepare(), outside the source=() array, meaning no checksum verification is performed. The downloaded JAR is then unpacked and its contents (pegdbserver_power_console and GDI libraries) are installed as executable binaries. While pemicro.com is the legitimate vendor site, the lack of integrity verification means any MITM or server-side substitution would silently deliver arbitrary code that gets installed and executed. This is a genuine supply-chain concern: executed native binaries from an external host with no checksum. The pattern of dynamic version discovery followed by an unverified binary download is a real medium-severity risk, not a false positive.

Triggered rules

MEDIUM External download from an untrusted host, not in source=() external_download_not_in_source

curl/wget fetches a URL on a non-allowlisted host that is not part of source=(), so it is not checksum-verified by makepkg.

PKGBUILD:20 wget -q -O- http://www.pemicro.com/eclipse/updates/com.pemicro.debug.gdbjtag.ppc.updatesite/artifacts.jar | \
PKGBUILD:22 wget -O source.jar http://www.pemicro.com/eclipse/updates/com.pemicro.debug.gdbjtag.ppc.updatesite/plugins/com.pemicro.debug.gdbjtag.ppc_$(cat version).jar

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 82%): The PKGBUILD fetches a prebuilt JAR (containing native Linux binaries under lin/) from pemicro.com at build time inside prepare(), outside the source=() array, meaning no checksum verification is performed. The downloaded JAR is then unpacked and its contents (pegdbserver_power_console and GDI libraries) are installed as executable binaries. While pemicro.com is the legitimate vendor site, the lack of integrity verification means any MITM or server-side substitution would silently deliver arbitrary code that gets installed and executed. This is a genuine supply-chain concern: executed native binaries from an external host with no checksum. The pattern of dynamic version discovery followed by an unverified binary download is a real medium-severity risk, not a false positive.

PKGBUILD

2 offending line(s) highlighted

      1#
    
      2# Maintainer: Patrick Oppenlander <patrick.oppenlander at gmail.com>
    
      3#
    
      4pkgname=pegdbserver_power
    
      5pkgver=2.0.2.202005132054
    
      6pkgrel=1
    
      7pkgdesc="GDB server for Power devices using P&E JTAG hardware"
    
      8url="http://www.pemicro.com"
    
      9arch=(x86_64)
    
      10license=(custom)
    
      11depends=(libusb-compat)
    
      12makedepends=(wget unzip gzip)
    
      13install=pegdbserver_power.install
    
      14source=(license_gdb.pdf 55-pemicro.rules)
    
      15sha256sums=(6b135ddd5388f6a0dd1d1d9d6c6d7321423f391914312c4a4aafd9d851d10dbc
    
      16            4b9812f801faedb8a39c7e95bd829efeeb2941b1f4fb3ca774cfbf1ef4fa4081)
    
      17options=('!strip')
    
      18
    
      19prepare() {
    
      20	wget -q -O- http://www.pemicro.com/eclipse/updates/com.pemicro.debug.gdbjtag.ppc.updatesite/artifacts.jar | \
    
      21		zcat | grep "<artifact.*com.pemicro.debug.gdbjtag.ppc.feature" | cut -d\' -f6 > version
    
      22	wget -O source.jar http://www.pemicro.com/eclipse/updates/com.pemicro.debug.gdbjtag.ppc.updatesite/plugins/com.pemicro.debug.gdbjtag.ppc_$(cat version).jar
    
      23	unzip -q source.jar
    
      24}
    
      25
    
      26pkgver() {
    
      27	cat version
    
      28}
    
      29
    
      30package() {
    
      31	mkdir -p "$pkgdir/opt/$pkgname"
    
      32	cp -r lin/* "$pkgdir/opt/$pkgname"
    
      33	chmod +x "$pkgdir/opt/$pkgname/pegdbserver_power_console"
    
      34	chmod 644 "$pkgdir/opt/$pkgname/gdi/P&E"/*
    
      35	chmod 666 "$pkgdir/opt/$pkgname/gdi/P&E"/*.add
    
      36
    
      37	mkdir -p "$pkgdir/etc/udev/rules.d"
    
      38	cp 55-pemicro.rules "$pkgdir/etc/udev/rules.d"
    
      39
    
      40	mkdir -p "$pkgdir/usr/bin"
    
      41	ln -s /opt/$pkgname/pegdbserver_power_console "$pkgdir/usr/bin/pegdbserver_power_console"
    
      42
    
      43	mkdir -p "$pkgdir/usr/share/licenses/$pkgname"
    
      44	cp license_gdb.pdf "$pkgdir/usr/share/licenses/$pkgname"
    
      45}
    
      46
    
      47

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