HDF5 <= 2.2.0 Multiple Vulnerabilities

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(362604);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/02");

  script_cve_id("CVE-2026-19026", "CVE-2026-19027", "CVE-2026-19028");
  script_xref(name:"IAVB", value:"2026-B-0279");

  script_name(english:"HDF5 <= 2.2.0 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of HDF5 installed on the remote host is 2.2.0 or earlier. It is, therefore, affected by multiple
vulnerabilities:

  - H5Z__filter_nbit in H5Znbit.c dereferences cd_values[0] through cd_values[4] without validating that
    cd_values is non-NULL or that cd_nelmts is at least 5, the fixed size of the filter's header. This allows
    attackers to cause a denial of service via a crafted HDF5 file that stores the N-Bit filter pipeline
    message with zero client-data values, opened and read via H5Dread, e.g. by the h5ls or h5repack tools.
    (CVE-2026-19026)

  - The H5Z__nbit_decompress_one_byte, H5Z__nbit_decompress_one_nooptype, and
    H5Z__nbit_decompress_one_atomic functions in H5Znbit.c advance a read index into the compressed chunk
    buffer without bounding it against the buffer's actual size. This allows attackers to cause an
    out-of-bounds heap read, and in constrained cases disclosure of adjacent heap memory into decompressed
    dataset values, via a crafted HDF5 file whose N-Bit filter parameters describe more decompressed data than
    the stored compressed chunk actually contains, triggered via H5Dread, e.g. by the h5ls or h5repack tools.
    (CVE-2026-19027)

  - H5Z__filter_fletcher32 in H5Zfletcher32.c computes the data length to checksum by subtracting the 4-byte
    trailing checksum size from the input buffer size without checking that the buffer is at least 4 bytes,
    allowing a size_t underflow. This allows attackers to cause a denial of service (massively out-of-bounds
    read and application crash in H5_checksum_fletcher32) via a crafted HDF5 file with a Fletcher32-filtered
    chunk smaller than 4 bytes, triggered via H5Dread, e.g. by the h5ls or h5dump tools. (CVE-2026-19028)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported
version number.");
  script_set_attribute(attribute:"see_also", value:"https://github.com/HDFGroup/hdf5/pull/6497");
  script_set_attribute(attribute:"see_also", value:"https://github.com/HDFGroup/hdf5/issues/6488");
  script_set_attribute(attribute:"see_also", value:"https://github.com/HDFGroup/hdf5/issues/6489");
  script_set_attribute(attribute:"see_also", value:"https://github.com/HDFGroup/hdf5/issues/6490");
  script_set_attribute(attribute:"see_also", value:"https://github.com/HDFGroup/hdf5/issues/6492");
  script_set_attribute(attribute:"solution", value:
"There is no released version of HDF5 that addresses these issues. Apply the upstream patch from HDFGroup/hdf5
pull request 6497, or upgrade to a release that includes it when one is available.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:N/C:P/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-19027");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/08/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/a:hdfgroup:hdf5");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");
  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("hdf5_nix_installed.nbin");
  script_require_keys("Host/local_checks_enabled", "installed_sw/HDF5");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'HDF5', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'max_version': '2.2.0', 'fixed_display': 'See vendor advisory'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING);
vdf::handle_check_and_report_errors(vdf_result:result);