Debian DLA-3112-1 : bzip2 - LTS 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-3112. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(165217);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/09/16");

  script_name(english:"Debian DLA-3112-1 : bzip2 - LTS 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 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3112
advisory.

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://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944557");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/bzip2");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2022/dla-3112");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/bzip2");
  script_set_attribute(attribute:"solution", value:
"Upgrade the bzip2 packages.

For Debian 10 buster, this problem has been fixed in version 1.0.6-9.2~deb10u2.");
  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:"2022/09/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/09/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bzip2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bzip2-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbz2-1.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbz2-dev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022 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 release = get_kb_item('Host/Debian/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Debian');
var release = chomp(release);
if (! preg(pattern:"^(10)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 10.0', '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': '10.0', 'prefix': 'bzip2', 'reference': '1.0.6-9.2~deb10u2'},
    {'release': '10.0', 'prefix': 'bzip2-doc', 'reference': '1.0.6-9.2~deb10u2'},
    {'release': '10.0', 'prefix': 'libbz2-1.0', 'reference': '1.0.6-9.2~deb10u2'},
    {'release': '10.0', 'prefix': 'libbz2-dev', 'reference': '1.0.6-9.2~deb10u2'}
];

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, 'bzip2 / bzip2-doc / libbz2-1.0 / libbz2-dev');
}