Ubuntu 20.04 LTS / 22.04 LTS / 23.04 / 23.10 : PostgreSQL vulnerabilities (USN-6538-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6538-1. 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(186624);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id("CVE-2023-5868", "CVE-2023-5869", "CVE-2023-5870");
  script_xref(name:"USN", value:"6538-1");

  script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS / 23.04 / 23.10 : PostgreSQL vulnerabilities (USN-6538-1)");

  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 20.04 LTS / 22.04 LTS / 23.04 / 23.10 host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-6538-1 advisory.

    Jingzhou Fu discovered that PostgreSQL incorrectly handled certain unknown arguments in aggregate function
    calls. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2023-5868)

    Pedro Gallegos discovered that PostgreSQL incorrectly handled modifying certain SQL array values. A remote
    attacker could use this issue to obtain sensitive information, or possibly execute arbitrary code.
    (CVE-2023-5869)

    Hemanth Sandrana and Mahendrakar Srinivasarao discovered that PostgreSQL allowed the pg_signal_backend
    role to signal certain superuser processes, contrary to expectations. (CVE-2023-5870)

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-6538-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  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:L/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-2023-5869");

  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:"2023/11/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/12/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/12/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:23.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:23.10");
  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:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-14");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-client-12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-client-14");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-client-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plperl-12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plperl-14");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plperl-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plpython3-12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plpython3-14");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-plpython3-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-pltcl-12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-pltcl-14");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-pltcl-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-server-dev-12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-server-dev-14");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:postgresql-server-dev-15");
  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) 2023-2024 Canonical, Inc. / NASL script (C) 2023-2024 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 (! ('20.04' >< os_release || '22.04' >< os_release || '23.04' >< os_release || '23.10' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04 / 22.04 / 23.04 / 23.10', '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': '20.04', 'pkgname': 'libecpg-compat3', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'libecpg-dev', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'libecpg6', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'libpgtypes3', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'libpq-dev', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'libpq5', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'postgresql-12', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'postgresql-client-12', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'postgresql-plperl-12', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'postgresql-plpython3-12', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'postgresql-pltcl-12', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'postgresql-server-dev-12', 'pkgver': '12.17-0ubuntu0.20.04.1'},
    {'osver': '22.04', 'pkgname': 'libecpg-compat3', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'libecpg-dev', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'libecpg6', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'libpgtypes3', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'libpq-dev', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'libpq5', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'postgresql-14', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'postgresql-client-14', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'postgresql-plperl-14', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'postgresql-plpython3-14', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'postgresql-pltcl-14', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'postgresql-server-dev-14', 'pkgver': '14.10-0ubuntu0.22.04.1'},
    {'osver': '23.04', 'pkgname': 'libecpg-compat3', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'libecpg-dev', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'libecpg6', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'libpgtypes3', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'libpq-dev', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'libpq5', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'postgresql-15', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'postgresql-client-15', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'postgresql-plperl-15', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'postgresql-plpython3-15', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'postgresql-pltcl-15', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.04', 'pkgname': 'postgresql-server-dev-15', 'pkgver': '15.5-0ubuntu0.23.04.1'},
    {'osver': '23.10', 'pkgname': 'libecpg-compat3', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'libecpg-dev', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'libecpg6', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'libpgtypes3', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'libpq-dev', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'libpq5', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'postgresql-15', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'postgresql-client-15', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'postgresql-plperl-15', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'postgresql-plpython3-15', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'postgresql-pltcl-15', 'pkgver': '15.5-0ubuntu0.23.10.1'},
    {'osver': '23.10', 'pkgname': 'postgresql-server-dev-15', 'pkgver': '15.5-0ubuntu0.23.10.1'}
];

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');
}