Joomla 3.9.x < 5.4.2 / 6.0.x < 6.0.2 Joomla 6.0.2 & 5.4.2 Security & Bugfix Release (5942-joomla-6-0-2-and-5-4-2-security-bugfix-release)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(281853);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/30");

  script_cve_id("CVE-2025-63083");
  script_xref(name:"IAVA", value:"2026-A-0011-S");

  script_name(english:"Joomla 3.9.x < 5.4.2 / 6.0.x < 6.0.2 Joomla 6.0.2 & 5.4.2 Security & Bugfix Release (5942-joomla-6-0-2-and-5-4-2-security-bugfix-release)");

  script_set_attribute(attribute:"synopsis", value:
"A PHP application running on the remote web server is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the instance of Joomla! running on the remote web server is 3.9.x prior to 5.4.2
or 6.0.x prior to 6.0.2. It is, therefore, affected by a vulnerability.

  - Lack of output escaping leads to a XSS vector in the pagebreak plugin. (CVE-2025-63083)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://developer.joomla.org/security-centre/1016-20260101-core-inadequate-content-filtering-for-data-urls.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?63b03947");
  # https://developer.joomla.org/security-centre/1017-20260102-core-xss-vector-in-the-pagebreak-plugin.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a035c024");
  # https://www.joomla.org/announcements/release-news/5942-joomla-6-0-2-and-5-4-2-security-bugfix-release.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?56b15a79");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Joomla! version 5.4.2 / 6.0.2 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  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:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-63083");

  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:"2026/01/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/06");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:joomla:joomla\!");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  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) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("joomla_detect.nasl");
  script_require_keys("installed_sw/Joomla!", "www/PHP", "Settings/ParanoidReport");
  script_require_ports("Services/www", 80);

  exit(0);
}

include('vcf.inc');
include('http.inc');

if (report_paranoia < 2) audit(AUDIT_PARANOID);

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

var app_info = vcf::get_app_info(app:'Joomla!', port:port, webapp:TRUE);

vcf::check_granularity(app_info:app_info, sig_segments:3);

var constraints = [
  { 'min_version' : '3.9.0', 'max_version' : '5.4.1', 'fixed_version' : '5.4.2' },
  { 'min_version' : '6.0.0', 'max_version' : '6.0.1', 'fixed_version' : '6.0.2' }
];

vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_WARNING,
    flags:{'xss':TRUE}
);