Ubuntu 14.04 LTS : Samba vulnerabilities (USN-2257-1)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-2257-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(76275);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id(
    "CVE-2014-0178",
    "CVE-2014-0239",
    "CVE-2014-0244",
    "CVE-2014-3493"
  );
  script_bugtraq_id(
    67686,
    67691,
    68148,
    68150
  );
  script_xref(name:"USN", value:"2257-1");

  script_name(english:"Ubuntu 14.04 LTS : Samba vulnerabilities (USN-2257-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"Christof Schmitt discovered that Samba incorrectly initialized a
certain response field when vfs shadow copy was enabled. A remote
authenticated attacker could use this issue to possibly obtain
sensitive information. This issue only affected Ubuntu 13.10 and
Ubuntu 14.04 LTS. (CVE-2014-0178)

It was discovered that the Samba internal DNS server incorrectly
handled QR fields when processing incoming DNS messages. A remote
attacker could use this issue to cause Samba to consume resources,
resulting in a denial of service. This issue only affected Ubuntu
14.04 LTS. (CVE-2014-0239)

Daniel Berteaud discovered that the Samba NetBIOS name service daemon
incorrectly handled certain malformed packets. A remote attacker could
use this issue to cause Samba to consume resources, resulting in a
denial of service. This issue only affected Ubuntu 12.04 LTS, Ubuntu
13.10, and Ubuntu 14.04 LTS. (CVE-2014-0244)

Simon Arlott discovered that Samba incorrectly handled certain unicode
path names. A remote authenticated attacker could use this issue to
cause Samba to stop responding, resulting in a denial of service.
(CVE-2014-3493).

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-2257-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:P/I:N/A:N");
  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:N/I:N/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-2014-0178");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2014-3493");

  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:"2014/05/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/06/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:samba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:samba-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:samba-common-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:samba-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:samba-dsdb-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:samba-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:samba-testsuite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:samba-vfs-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:smbclient");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:winbind");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnss-winbind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpam-smbpass");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpam-winbind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libparse-pidl-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsmbclient");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsmbclient-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsmbsharemodes-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsmbsharemodes0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwbclient-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwbclient0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-samba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:registry-tools");
  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) 2014-2020 Canonical, Inc. / NASL script (C) 2014-2019 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)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04', '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': 'libnss-winbind', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libpam-smbpass', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libpam-winbind', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libparse-pidl-perl', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libsmbclient', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libsmbclient-dev', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libsmbsharemodes-dev', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libsmbsharemodes0', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libwbclient-dev', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libwbclient0', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'python-samba', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'registry-tools', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'samba', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'samba-common', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'samba-common-bin', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'samba-dev', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'samba-dsdb-modules', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'samba-libs', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'samba-testsuite', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'samba-vfs-modules', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'smbclient', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'},
    {'osver': '14.04', 'pkgname': 'winbind', 'pkgver': '2:4.1.6+dfsg-1ubuntu2.14.04.2'}
];

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_NOTE,
    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, 'libnss-winbind / libpam-smbpass / libpam-winbind / etc');
}