Ubuntu 14.04 LTS / 16.04 LTS : tcpdump vulnerabilities (USN-3205-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3205-1. 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(97318);
  script_version("3.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id(
    "CVE-2016-7922",
    "CVE-2016-7923",
    "CVE-2016-7924",
    "CVE-2016-7925",
    "CVE-2016-7926",
    "CVE-2016-7927",
    "CVE-2016-7928",
    "CVE-2016-7929",
    "CVE-2016-7930",
    "CVE-2016-7931",
    "CVE-2016-7932",
    "CVE-2016-7933",
    "CVE-2016-7934",
    "CVE-2016-7935",
    "CVE-2016-7936",
    "CVE-2016-7937",
    "CVE-2016-7938",
    "CVE-2016-7939",
    "CVE-2016-7940",
    "CVE-2016-7973",
    "CVE-2016-7974",
    "CVE-2016-7975",
    "CVE-2016-7983",
    "CVE-2016-7984",
    "CVE-2016-7985",
    "CVE-2016-7986",
    "CVE-2016-7992",
    "CVE-2016-7993",
    "CVE-2016-8574",
    "CVE-2016-8575",
    "CVE-2017-5202",
    "CVE-2017-5203",
    "CVE-2017-5204",
    "CVE-2017-5205",
    "CVE-2017-5341",
    "CVE-2017-5342",
    "CVE-2017-5482",
    "CVE-2017-5483",
    "CVE-2017-5484",
    "CVE-2017-5485",
    "CVE-2017-5486"
  );
  script_xref(name:"USN", value:"3205-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS : tcpdump vulnerabilities (USN-3205-1)");

  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 14.04 LTS / 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as
referenced in the USN-3205-1 advisory.

    It was discovered that tcpdump incorrectly handled certain packets. A remote attacker could use this issue
    to cause tcpdump to crash, resulting in a denial of service, or possibly execute arbitrary code.

    In the default installation, attackers would be isolated by the tcpdump AppArmor profile.

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-3205-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected tcpdump package.");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-5486");

  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:"2017/01/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/02/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/02/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:tcpdump");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  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) 2017-2024 Canonical, Inc. / NASL script (C) 2017-2024 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 (! ('14.04' >< os_release || '16.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04', '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': '14.04', 'pkgname': 'tcpdump', 'pkgver': '4.9.0-1ubuntu1~ubuntu14.04.1'},
    {'osver': '16.04', 'pkgname': 'tcpdump', 'pkgver': '4.9.0-1ubuntu1~ubuntu16.04.1'}
];

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, 'tcpdump');
}