Ubuntu 16.04 ESM : MySQL vulnerability (USN-5537-2)

##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5537-2. 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(163561);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/10");

  script_cve_id("CVE-2022-21515");
  script_xref(name:"USN", value:"5537-2");

  script_name(english:"Ubuntu 16.04 ESM : MySQL vulnerability (USN-5537-2)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 16.04 ESM host has packages installed that are affected by a vulnerability as referenced in the
USN-5537-2 advisory.

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Options). Supported versions
    that are affected are 5.7.38 and prior and 8.0.29 and prior. Easily exploitable vulnerability allows high
    privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful
    attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable
    crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector:
    (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H). (CVE-2022-21515)

Note that Nessus has not tested for this issue 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-5537-2");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:M/C:N/I:N/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:H/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-2022-21515");

  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:"2022/07/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/07/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/07/29");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:esm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmysqlclient-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmysqlclient20");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmysqld-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mysql-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mysql-client-5.7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mysql-client-core-5.7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mysql-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mysql-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mysql-server-5.7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mysql-server-core-5.7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mysql-source-5.7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mysql-testsuite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mysql-testsuite-5.7");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright(english:"Ubuntu Security Notice (C) 2022-2023 Canonical, Inc. / NASL script (C) 2022-2023 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 (! ('16.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 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': '16.04', 'pkgname': 'libmysqlclient-dev', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'libmysqlclient20', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'libmysqld-dev', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'mysql-client', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'mysql-client-5.7', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'mysql-client-core-5.7', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'mysql-common', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'mysql-server', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'mysql-server-5.7', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'mysql-server-core-5.7', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'mysql-source-5.7', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'mysql-testsuite', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'},
    {'osver': '16.04', 'pkgname': 'mysql-testsuite-5.7', 'pkgver': '5.7.39-0ubuntu0.16.04.1+esm2'}
];

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_WARNING,
    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, 'libmysqlclient-dev / libmysqlclient20 / libmysqld-dev / etc');
}