Debian DSA-4935-1 : php7.3 - security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dsa-4935. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(151423);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/08");

  script_cve_id("CVE-2021-21704", "CVE-2021-21705");

  script_name(english:"Debian DSA-4935-1 : php7.3 - 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
dsa-4935 advisory. 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://security-tracker.debian.org/tracker/source-package/php7.3");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2021/dsa-4935");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-21704");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-21705");
  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 the stable distribution (buster), these problems have been fixed in version 7.3.29-1~deb10u1.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
  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:N/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-21705");

  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:"2021/07/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/07/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/06");

  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_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2021-2023 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('audit.inc');
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);

release = get_kb_item('Host/Debian/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Debian');
release = chomp(release);
if (! preg(pattern:"^(10)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 10.0', 'Debian ' + release);
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);

pkgs = [
    {'release': '10.0', 'prefix': 'libapache2-mod-php7.3', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'libphp7.3-embed', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-bcmath', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-bz2', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-cgi', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-cli', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-common', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-curl', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-dba', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-dev', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-enchant', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-fpm', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-gd', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-gmp', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-imap', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-interbase', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-intl', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-json', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-ldap', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-mbstring', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-mysql', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-odbc', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-opcache', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-pgsql', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-phpdbg', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-pspell', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-readline', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-recode', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-snmp', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-soap', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-sqlite3', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-sybase', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-tidy', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-xml', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-xmlrpc', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-xsl', 'reference': '7.3.29-1~deb10u1'},
    {'release': '10.0', 'prefix': 'php7.3-zip', 'reference': '7.3.29-1~deb10u1'}
];

flag = 0;
foreach package_array ( pkgs ) {
  release = NULL;
  prefix = NULL;
  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_WARNING,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  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');
}