WordPress < 2.8.3 'wp-admin' Multiple Security Bypass Vulnerabilities

#
# (C) Tenable Network Security, Inc.
#

include('compat.inc');

if (description)
{
  script_id(106376);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/05");

  script_cve_id("CVE-2009-2853");
  script_bugtraq_id(35935);

  script_name(english:"WordPress < 2.8.3 'wp-admin' Multiple Security Bypass Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP application that is
affected by multiple security bypass vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the WordPress
application running on the remote web server is prior to 2.8.3.
It is, therefore, affected by multiple security bypass
vulnerabilities.

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://wordpress.org/news/2009/08/wordpress-2-8-3-security-release/");
  script_set_attribute(attribute:"see_also", value:"https://codex.wordpress.org/Version_2.8.3");
  script_set_attribute(attribute:"solution", value:
"Upgrade to WordPress version 2.8.3 or later.");
  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:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2009-2853");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"d2_elliot_name", value:"WordPress 2.8.3 RCE");
  script_set_attribute(attribute:"exploit_framework_d2_elliot", value:"true");
  script_cwe_id(264);

  script_set_attribute(attribute:"vuln_publication_date", value:"2009/08/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2009/08/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/26");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:wordpress:wordpress");
  script_set_attribute(attribute:"enable_cgi_scanning", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2018-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("wordpress_detect.nasl");
  script_require_keys("www/PHP", "installed_sw/WordPress", "Settings/ParanoidReport");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80, 443);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("install_func.inc");

app = "WordPress";
get_install_count(app_name:app, exit_if_zero:TRUE);

if (report_paranoia < 2) audit(AUDIT_PARANOID);

port = get_http_port(default:80, php:TRUE);

install = get_single_install(
  app_name : app,
  port     : port,
  exit_if_unknown_ver : TRUE
);

dir = install['path'];
version = install['version'];
install_url = build_url(port:port, qs:dir);

if (report_paranoia < 2) audit(AUDIT_PARANOID);

ver = split(version, sep:'.', keep:FALSE);
for (i=0; i<max_index(ver); i++)
  ver[i] = int(ver[i]);

# Versions < 2.8.3 are affected.
if (
  ver[0] < 2 ||
  (ver[0] == 2 && ver[1] < 8) ||
  (ver[0] == 2 && ver[1] == 8 && ver[2] < 3)
)
{
  report =
  '\n  URL               : ' + install_url +
  '\n  Installed version : ' + version +
  '\n  Fixed version     : 2.8.3' +
  '\n';
  security_report_v4(
    severity : SECURITY_HOLE,
    port     : port,
    extra    : report
  );
  exit(0);
}
audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url, version);