Ubuntu 14.04 LTS / 16.04 LTS : libarchive vulnerabilities (USN-3225-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3225-1. 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(97660);
  script_version("3.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id(
    "CVE-2016-5418",
    "CVE-2016-6250",
    "CVE-2016-7166",
    "CVE-2016-8687",
    "CVE-2016-8688",
    "CVE-2016-8689",
    "CVE-2017-5601"
  );
  script_xref(name:"USN", value:"3225-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS : libarchive vulnerabilities (USN-3225-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"It was discovered that libarchive incorrectly handled hardlink entries
when extracting archives. A remote attacker could possibly use this
issue to overwrite arbitrary files. (CVE-2016-5418)

Christian Wressnegger, Alwin Maier, and Fabian Yamaguchi discovered
that libarchive incorrectly handled filename lengths when writing
ISO9660 archives. A remote attacker could use this issue to cause
libarchive to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only applied to Ubuntu 12.04 LTS,
Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6250)

Alexander Cherepanov discovered that libarchive incorrectly handled
recursive decompressions. A remote attacker could possibly use this
issue to cause libarchive to hang, resulting in a denial of service.
This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and
Ubuntu 16.04 LTS. (CVE-2016-7166)

It was discovered that libarchive incorrectly handled non-printable
multibyte characters in filenames. A remote attacker could possibly
use this issue to cause libarchive to crash, resulting in a denial of
service. (CVE-2016-8687)

It was discovered that libarchive incorrectly handled line sizes when
extracting certain archives. A remote attacker could possibly use this
issue to cause libarchive to crash, resulting in a denial of service.
(CVE-2016-8688)

It was discovered that libarchive incorrectly handled multiple
EmptyStream attributes when extracting certain 7zip archives. A remote
attacker could possibly use this issue to cause libarchive to crash,
resulting in a denial of service. (CVE-2016-8689)

Jakub Jirasek discovered that libarchive incorrectly handled memory
when extracting certain archives. A remote attacker could possibly use
this issue to cause libarchive to crash, resulting in a denial of
service. (CVE-2017-5601).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-3225-1");
  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:L/I:L/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-2016-6250");

  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:"2016/09/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/03/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libarchive13");
  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:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bsdcpio");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bsdtar");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libarchive-dev");
  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) 2017-2023 Canonical, Inc. / NASL script (C) 2017-2023 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 (! ('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': 'bsdcpio', 'pkgver': '3.1.2-7ubuntu2.4'},
    {'osver': '14.04', 'pkgname': 'bsdtar', 'pkgver': '3.1.2-7ubuntu2.4'},
    {'osver': '14.04', 'pkgname': 'libarchive-dev', 'pkgver': '3.1.2-7ubuntu2.4'},
    {'osver': '14.04', 'pkgname': 'libarchive13', 'pkgver': '3.1.2-7ubuntu2.4'},
    {'osver': '16.04', 'pkgname': 'bsdcpio', 'pkgver': '3.1.2-11ubuntu0.16.04.3'},
    {'osver': '16.04', 'pkgname': 'bsdtar', 'pkgver': '3.1.2-11ubuntu0.16.04.3'},
    {'osver': '16.04', 'pkgname': 'libarchive-dev', 'pkgver': '3.1.2-11ubuntu0.16.04.3'},
    {'osver': '16.04', 'pkgname': 'libarchive13', 'pkgver': '3.1.2-11ubuntu0.16.04.3'}
];

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_HOLE,
    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, 'bsdcpio / bsdtar / libarchive-dev / libarchive13');
}