Debian DLA-3555-1 : php7.3 - LTS security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-3555. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(180518);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/30");

  script_cve_id("CVE-2023-3823", "CVE-2023-3824");

  script_name(english:"Debian DLA-3555-1 : php7.3 - LTS security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-3555 advisory.

  - In PHP versions 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8 various XML functions
    rely on libxml global state to track configuration variables, like whether external entities are loaded.
    This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate
    function. However, since the state is process-global, other modules - such as ImageMagick - may also use
    this library within the same process, and change that global state for their internal purposes, and leave
    it in a state where external entities loading is enabled. This can lead to the situation where external
    XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to
    PHP. This vulnerable state may persist in the same process across many requests, until the process is shut
    down. (CVE-2023-3823)

  - In PHP version 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8, when loading phar file,
    while reading PHAR directory entries, insufficient length checking may lead to a stack buffer overflow,
    leading potentially to memory corruption or RCE. (CVE-2023-3824)

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://security-tracker.debian.org/tracker/source-package/php7.3");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2023/dla-3555");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-3823");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-3824");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/php7.3");
  script_set_attribute(attribute:"solution", value:
"Upgrade the php7.3 packages.

For Debian 10 buster, these problems have been fixed in version 7.3.31-1~deb10u5.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:N/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-2023-3824");

  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:"2023/08/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/09/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libapache2-mod-php7.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libphp7.3-embed");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-bcmath");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-bz2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-cgi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-cli");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-dba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-enchant");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-fpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-gd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-gmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-imap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-interbase");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-intl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-json");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-mbstring");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-odbc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-opcache");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-phpdbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-pspell");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-readline");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-recode");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-soap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-sqlite3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-sybase");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-tidy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-xml");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-xmlrpc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-xsl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.3-zip");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/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);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(10)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 10.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '10.0', 'prefix': 'libapache2-mod-php7.3', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'libphp7.3-embed', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-bcmath', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-bz2', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-cgi', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-cli', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-common', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-curl', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-dba', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-dev', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-enchant', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-fpm', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-gd', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-gmp', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-imap', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-interbase', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-intl', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-json', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-ldap', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-mbstring', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-mysql', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-odbc', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-opcache', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-pgsql', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-phpdbg', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-pspell', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-readline', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-recode', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-snmp', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-soap', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-sqlite3', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-sybase', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-tidy', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-xml', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-xmlrpc', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-xsl', 'reference': '7.3.31-1~deb10u5'},
    {'release': '10.0', 'prefix': 'php7.3-zip', 'reference': '7.3.31-1~deb10u5'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var _release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (_release && prefix && reference) {
    if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libapache2-mod-php7.3 / libphp7.3-embed / php7.3 / php7.3-bcmath / etc');
}