Ubuntu 18.04 ESM / 20.04 ESM : Graphviz vulnerabilities (USN-5971-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5971-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(173372);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id("CVE-2018-10196", "CVE-2019-11023", "CVE-2020-18032");
  script_xref(name:"USN", value:"5971-1");

  script_name(english:"Ubuntu 18.04 ESM / 20.04 ESM : Graphviz vulnerabilities (USN-5971-1)");

  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 18.04 ESM / 20.04 ESM host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-5971-1 advisory.

  - NULL pointer dereference vulnerability in the rebuild_vlists function in lib/dotgen/conc.c in the dotgen
    library in Graphviz 2.40.1 allows remote attackers to cause a denial of service (application crash) via a
    crafted file. (CVE-2018-10196)

  - The agroot() function in cgraph\obj.c in libcgraph.a in Graphviz 2.39.20160612.1140 has a NULL pointer
    dereference, as demonstrated by graphml2gv. (CVE-2019-11023)

  - Buffer Overflow in Graphviz Graph Visualization Tools from commit ID f8b9e035 and earlier allows remote
    attackers to execute arbitrary code or cause a denial of service (application crash) by loading a crafted
    file into the lib/common/shapes.c component. (CVE-2020-18032)

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-5971-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:R/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-2020-18032");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2019-11023");

  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:"2018/05/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/03/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/03/24");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:esm");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:esm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:graphviz");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:graphviz-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcdt5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcgraph6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgraphviz-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgv-guile");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgv-lua");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgv-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgv-php5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgv-php7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgv-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgv-ruby");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgv-tcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgvc6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgvc6-plugins-gtk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgvpr2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:liblab-gamut1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpathplan4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxdot4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-gv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3-gv");
  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) 2023 Canonical, Inc. / NASL script (C) 2023 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 (! ('18.04' >< os_release || '20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04 / 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': '18.04', 'pkgname': 'graphviz', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libcdt5', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libcgraph6', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libgraphviz-dev', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libgv-guile', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libgv-lua', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libgv-perl', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libgv-php7', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libgv-ruby', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libgv-tcl', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libgvc6', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libgvc6-plugins-gtk', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libgvpr2', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'liblab-gamut1', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libpathplan4', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'libxdot4', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'python-gv', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '18.04', 'pkgname': 'python3-gv', 'pkgver': '2.40.1-2ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'graphviz', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libcdt5', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libcgraph6', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libgraphviz-dev', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libgv-guile', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libgv-lua', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libgv-perl', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libgv-php7', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libgv-ruby', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libgv-tcl', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libgvc6', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libgvc6-plugins-gtk', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libgvpr2', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'liblab-gamut1', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libpathplan4', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'libxdot4', 'pkgver': '2.42.2-3ubuntu0.1~esm1'},
    {'osver': '20.04', 'pkgname': 'python3-gv', 'pkgver': '2.42.2-3ubuntu0.1~esm1'}
];

var flag = 0;
foreach 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)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'graphviz / libcdt5 / libcgraph6 / libgraphviz-dev / libgv-guile / etc');
}