Ubuntu 20.04 LTS : ImageMagick vulnerabilities (USN-4549-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4549-1. The text
# itself is copyright (C) Canonical, Inc. See
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
#

include('compat.inc');

if (description)
{
  script_id(140922);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id("CVE-2019-19948", "CVE-2019-19949");
  script_xref(name:"USN", value:"4549-1");

  script_name(english:"Ubuntu 20.04 LTS : ImageMagick vulnerabilities (USN-4549-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in
the USN-4549-1 advisory.

    It was discovered that ImageMagick incorrectly handled certain specially crafted image files. If a user or
    automated system using ImageMagick were tricked into opening a specially crafted image, an attacker could
    exploit this to cause a denial of service or other unspecified impact. (CVE-2019-19948, CVE-2019-19949)

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

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-4549-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-19948");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/09/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/09/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:imagemagick");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:imagemagick-6-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:imagemagick-6.q16");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:imagemagick-6.q16hdri");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:imagemagick-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libimage-magick-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libimage-magick-q16-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libimage-magick-q16hdri-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagick++-6-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagick++-6.q16-8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagick++-6.q16-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagick++-6.q16hdri-8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagick++-6.q16hdri-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagick++-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6-arch-config");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-6-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16hdri-6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16hdri-6-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16hdri-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickcore-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16-6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16hdri-6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16hdri-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmagickwand-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:perlmagick");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2020-2024 Canonical, Inc. / NASL script (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/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);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '20.04', 'pkgname': 'imagemagick', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'imagemagick-6-common', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'imagemagick-6.q16', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'imagemagick-6.q16hdri', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'imagemagick-common', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libimage-magick-perl', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libimage-magick-q16-perl', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libimage-magick-q16hdri-perl', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagick++-6-headers', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagick++-6.q16-8', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagick++-6.q16-dev', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagick++-6.q16hdri-8', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagick++-6.q16hdri-dev', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagick++-dev', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickcore-6-arch-config', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickcore-6-headers', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickcore-6.q16-6', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickcore-6.q16-6-extra', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickcore-6.q16-dev', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickcore-6.q16hdri-6', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickcore-6.q16hdri-6-extra', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickcore-6.q16hdri-dev', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickcore-dev', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickwand-6-headers', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickwand-6.q16-6', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickwand-6.q16-dev', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickwand-6.q16hdri-6', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickwand-6.q16hdri-dev', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'libmagickwand-dev', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'},
    {'osver': '20.04', 'pkgname': 'perlmagick', 'pkgver': '8:6.9.10.23+dfsg-2.1ubuntu11.1'}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'imagemagick / imagemagick-6-common / imagemagick-6.q16 / etc');
}