Ubuntu 16.04 ESM : PHP vulnerabilities (USN-5479-2)

##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5479-2. 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(162718);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/10");

  script_cve_id("CVE-2022-31625", "CVE-2022-31626");
  script_xref(name:"USN", value:"5479-2");

  script_name(english:"Ubuntu 16.04 ESM : PHP vulnerabilities (USN-5479-2)");

  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 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in
the USN-5479-2 advisory.

  - In PHP versions 7.4.x below 7.4.30, 8.0.x below 8.0.20, and 8.1.x below 8.1.7, when using Postgres
    database extension, supplying invalid parameters to the parametrized query may lead to PHP attempting to
    free memory using uninitialized data as pointers. This could lead to RCE vulnerability or denial of
    service. (CVE-2022-31625)

  - In PHP versions 7.4.x below 7.4.30, 8.0.x below 8.0.20, and 8.1.x below 8.1.7, when pdo_mysql extension
    with mysqlnd driver, if the third party is allowed to supply host to connect to and the password for the
    connection, password of excessive length can trigger a buffer overflow in PHP, which can lead to a remote
    code execution vulnerability. (CVE-2022-31626)

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-5479-2");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/UI:N/S:U/C:H/I:H/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-2022-31625");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-31626");

  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:"2022/06/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/07/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/07/05");

  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:libapache2-mod-php7.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libphp7.0-embed");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-bcmath");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-bz2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-cgi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-cli");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-dba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-enchant");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-fpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-gd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-gmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-imap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-interbase");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-intl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-json");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-mbstring");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-mcrypt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-odbc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-opcache");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-phpdbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-pspell");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-readline");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-recode");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-soap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-sqlite3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-sybase");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-tidy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-xml");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-xmlrpc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-xsl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:php7.0-zip");
  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': 'libapache2-mod-php7.0', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'libphp7.0-embed', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-bcmath', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-bz2', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-cgi', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-cli', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-common', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-curl', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-dba', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-dev', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-enchant', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-fpm', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-gd', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-gmp', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-imap', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-interbase', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-intl', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-json', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-ldap', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-mbstring', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-mcrypt', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-mysql', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-odbc', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-opcache', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-pgsql', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-phpdbg', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-pspell', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-readline', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-recode', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-snmp', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-soap', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-sqlite3', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-sybase', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-tidy', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-xml', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-xmlrpc', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-xsl', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'},
    {'osver': '16.04', 'pkgname': 'php7.0-zip', 'pkgver': '7.0.33-0ubuntu0.16.04.16+esm4'}
];

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, 'libapache2-mod-php7.0 / libphp7.0-embed / php7.0 / php7.0-bcmath / etc');
}