Debian dla-4226 : dns-root-data - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4226. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(240283);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/06/23");

  script_name(english:"Debian dla-4226 : dns-root-data - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has a package installed that is affected by a vulnerability as referenced in the dla-4226
advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4226-1                [email protected]
    https://www.debian.org/lts/security/                      Sylvain Beucler
    June 23, 2025                                 https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : dns-root-data
    Version        : 2024071801~deb11u1
    Debian Bug     : #1076995

    The dns-root-data package contains DNS root zone data as published by
    IANA to be used as initial source by DNS software. This release adds
    the DNSKEY record for the KSK-2024 trust anchor. This new key is
    planned for use starting October 2026, and the previous one (KSK-2017)
    should be revoked January 2027, leaving time to propagate the new
    trust anchor, or roll to it sooner in case of emergency.

    For Debian 11 bullseye, this problem has been fixed in version
    2024071801~deb11u1.

    We recommend that you upgrade your dns-root-data packages.

    For the detailed security status of dns-root-data please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/dns-root-data

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://security-tracker.debian.org/tracker/source-package/dns-root-data
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?55b375dc");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/dns-root-data");
  script_set_attribute(attribute:"solution", value:
"Upgrade the dns-root-data packages.");
  script_set_attribute(attribute:"risk_factor", value:"High");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/06/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/06/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/06/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dns-root-data");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '11.0', 'prefix': 'dns-root-data', 'reference': '2024071801~deb11u1'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var _release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (_release && prefix && reference) {
    if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'dns-root-data');
}