Joomla Core Privilege Escalation Vulnerability

# SPDX-FileCopyrightText: 2016 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

CPE = "cpe:/a:joomla:joomla";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.809765");
  script_version("2026-04-30T06:27:06+0000");
  script_cve_id("CVE-2016-9838");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_tag(name:"last_modification", value:"2026-04-30 06:27:06 +0000 (Thu, 30 Apr 2026)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-09-02 01:29:00 +0000 (Sat, 02 Sep 2017)");
  script_tag(name:"creation_date", value:"2016-12-16 12:43:30 +0530 (Fri, 16 Dec 2016)");

  script_name("Joomla Core Privilege Escalation Vulnerability");

  script_tag(name:"summary", value:"Joomla is prone to a privilege escalation vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"The flaw exists due to incorrect use of
  unfiltered data stored to the session on a form validation.");

  script_tag(name:"impact", value:"Successfully exploiting this issue allow
  remote attackers to gain elevated privileges and modify account information
  for existing user accounts.");

  script_tag(name:"affected", value:"Joomla core versions 1.6.0 through 3.6.4");

  script_tag(name:"solution", value:"Upgrade to Joomla version 3.6.5 or later.");

  script_tag(name:"solution_type", value:"VendorFix");

  script_tag(name:"qod_type", value:"remote_banner");

  script_xref(name:"URL", value:"https://developer.joomla.org/security-centre/664-20161201-core-elevated-privileges.html");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/94893");

  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_dependencies("joomla_http_detect.nasl");
  script_mandatory_keys("joomla/detected");

  exit(0);
}

include("version_func.inc");
include("host_details.inc");

if(!port = get_app_port(cpe:CPE))
  exit(0);

if(!version = get_app_version(cpe:CPE, port:port))
  exit(0);

if(version_in_range(version:version, test_version:"1.6.0", test_version2:"3.6.4")) {
  report = report_fixed_ver( installed_version:version, fixed_version:"3.6.5");
  security_message( data:report, port:port);
  exit(0);
}

exit(99);