Ubuntu 14.04 LTS / 16.04 LTS : PostgreSQL vulnerabilities (USN-3390-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3390-1. 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(102522);
  script_version("1.13");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id("CVE-2017-7546", "CVE-2017-7547", "CVE-2017-7548");
  script_xref(name:"USN", value:"3390-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS : PostgreSQL vulnerabilities (USN-3390-1)");

  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 packages installed that are affected by multiple vulnerabilities as
referenced in the USN-3390-1 advisory.

    Ben de Graaff, Jelte Fennema, and Jeroen van der Ham discovered that PostgreSQL allowed the use of empty
    passwords in some authentication methods, contrary to expected behaviour. A remote attacker could use an
    empty password to authenticate to servers that were believed to have password login disabled.
    (CVE-2017-7546)

    Jeff Janes discovered that PostgreSQL incorrectly handled the pg_user_mappings catalog view. A remote
    attacker without server privileges could possibly use this issue to obtain certain passwords.
    (CVE-2017-7547)

    Chapman Flack discovered that PostgreSQL incorrectly handled lo_put() permissions. A remote attacker could
    possibly use this issue to change the data in a large object. (CVE-2017-7548)

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-3390-1");
  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: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-2017-7546");

  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:"2017/08/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/08/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/08/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-9.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-9.5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-client-9.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-client-9.5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-contrib-9.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-contrib-9.5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plperl-9.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plperl-9.5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plpython-9.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plpython-9.5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plpython3-9.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plpython3-9.5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-pltcl-9.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-pltcl-9.5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-server-dev-9.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-server-dev-9.5");
  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:libecpg-compat3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libecpg-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libecpg6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpgtypes3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpq-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpq5");
  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': 'libecpg-compat3', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'libecpg-dev', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'libecpg6', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'libpgtypes3', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'libpq-dev', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'libpq5', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'postgresql-9.3', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'postgresql-client-9.3', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'postgresql-contrib-9.3', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'postgresql-plperl-9.3', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'postgresql-plpython-9.3', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'postgresql-plpython3-9.3', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'postgresql-pltcl-9.3', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '14.04', 'pkgname': 'postgresql-server-dev-9.3', 'pkgver': '9.3.18-0ubuntu0.14.04.1'},
    {'osver': '16.04', 'pkgname': 'libecpg-compat3', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'libecpg-dev', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'libecpg6', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'libpgtypes3', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'libpq-dev', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'libpq5', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'postgresql-9.5', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'postgresql-client-9.5', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'postgresql-contrib-9.5', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'postgresql-plperl-9.5', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'postgresql-plpython-9.5', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'postgresql-plpython3-9.5', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'postgresql-pltcl-9.5', 'pkgver': '9.5.8-0ubuntu0.16.04.1'},
    {'osver': '16.04', 'pkgname': 'postgresql-server-dev-9.5', 'pkgver': '9.5.8-0ubuntu0.16.04.1'}
];

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, 'libecpg-compat3 / libecpg-dev / libecpg6 / libpgtypes3 / libpq-dev / etc');
}