gctpc

LOW

maintainer orphaned 1 votes scanned 2026-09-17 00:27:14.276658

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Why flagged

The cheaper model's concern is overblown. ftp.cpc.ncep.noaa.gov is an official NOAA/NCEP (National Centers for Environmental Prediction) government FTP server — a legitimate, authoritative US government scientific data host. The wgrib2 tarball is the well-known NOAA wgrib2 package which bundles gctpc20a.tgz internally; this is a standard pattern for packages that extract a sub-component from a larger official distribution. The md5sum is pinned, providing integrity verification. The Makefile is a local file also checksummed. The build extracts the nested gctpc tarball and compiles only C source into a static library — no binary blobs are executed, no scripts from the downloaded archive are run. The only real concern is that the source is a large bundle (wgrib2) from which only a sub-component is used, and the URL uses http rather than https, but neither constitutes a supply-chain attack. This is sloppy/non-standard packaging (using a bundled tarball from a related project rather than a direct upstream source) but not a security risk.

Triggered rules

Low AI review downgraded a static finding llm_review

The static rules flagged this MEDIUM, but an AI model (anthropic/claude-4.6-sonnet-20260217) reviewed the full PKGBUILD and judged it LOW (confidence 82%): The cheaper model's concern is overblown. ftp.cpc.ncep.noaa.gov is an official NOAA/NCEP (National Centers for Environmental Prediction) government FTP server — a legitimate, authoritative US government scientific data host. The wgrib2 tarball is the well-known NOAA wgrib2 package which bundles gctpc20a.tgz internally; this is a standard pattern for packages that extract a sub-component from a larger official distribution. The md5sum is pinned, providing integrity verification. The Makefile is a local file also checksummed. The build extracts the nested gctpc tarball and compiles only C source into a static library — no binary blobs are executed, no scripts from the downloaded archive are run. The only real concern is that the source is a large bundle (wgrib2) from which only a sub-component is used, and the URL uses http rather than https, but neither constitutes a supply-chain attack. This is sloppy/non-standard packaging (using a bundled tarball from a related project rather than a direct upstream source) but not a security risk.

1 higher static finding superseded - not the current verdict (shown for transparency)

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:10 source=(http://www.ftp.cpc.ncep.noaa.gov/wd51we/wgrib2/wgrib2.tgz.v2.0.8

PKGBUILD

1 offending line(s) highlighted

      1# Contributor: Graziano Giuliani <graziano.giuliani@gmail.com>
    
      2pkgname=gctpc
    
      3pkgver=20a
    
      4pkgrel=3
    
      5pkgdesc="Software library for geolocation written by the USGS"
    
      6arch=("i686" "x86_64")
    
      7url="https://www.ngs.noaa.gov/PUBS_LIB/GeneralCartographicTransformationPackage_v2_TR_NOS124_CGS9.pdf"
    
      8options=('staticlibs')
    
      9license=('custom')
    
      10source=(http://www.ftp.cpc.ncep.noaa.gov/wd51we/wgrib2/wgrib2.tgz.v2.0.8
    
      11        Makefile)
    
      12md5sums=('3d56cbed5de8c460d304bf2206abc8d3'
    
      13         'baa2859f793a797b6e22525b0a74091c')
    
      14
    
      15build() {
    
      16  cd ${srcdir}/grib2
    
      17  tar zxvf gctpc20a.tgz
    
      18  cd ${pkgname}/source
    
      19  CC=gcc make -f ${srcdir}/Makefile
    
      20}
    
      21
    
      22package() {
    
      23  cd ${srcdir}/grib2/${pkgname}/source
    
      24  mkdir -p ${pkgdir}/usr/{lib,include/gctpc,share/licenses/gctpc}
    
      25  base=${srcdir}/grib2/${pkgname}
    
      26  install -Dm644 ${base}/source/proj.h ${pkgdir}/usr/include/gctpc
    
      27  install -Dm644 ${base}/source/cproj.h ${pkgdir}/usr/include/gctpc
    
      28  install -Dm644 ${base}/source/libgeo.a ${pkgdir}/usr/lib
    
      29  install -Dm644 ${base}/announce.txt ${pkgdir}/usr/share/licenses/gctpc/licence
    
      30}
    
      31

Scan history

Scanned at (UTC)	Severity	Rules
2026-09-17 00:27:14	Low	2
2026-09-16 00:03:17	Low	2
2026-09-15 00:25:31	Low	2
2026-09-14 00:27:57	Low	2
2026-09-13 00:19:54	Low	2
2026-09-12 00:25:17	Low	2
2026-09-11 00:19:22	Low	2
2026-09-10 00:22:44	Low	2
2026-09-09 00:04:09	Low	2
2026-09-08 00:18:08	Low	2
2026-09-07 00:30:15	Low	2
2026-09-06 00:17:06	Low	2
2026-09-05 00:16:27	Low	2
2026-09-04 00:03:13	Low	2
2026-09-03 00:15:47	Low	2
2026-09-02 00:02:31	Low	2
2026-09-01 00:11:19	Low	2
2026-08-31 00:19:57	Low	2
2026-08-30 00:04:14	Low	2
2026-08-29 00:29:17	Low	2