Joomla! CVE-2017-7988 Security Bypass Vulnerability

# SPDX-FileCopyrightText: 2017 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("1.3.6.1.4.1.25623.1.0.108154");
  script_version("2026-04-30T06:27:06+0000");
  script_cve_id("CVE-2017-7988");
  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:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");
  script_tag(name:"creation_date", value:"2017-05-08 10:00:00 +0200 (Mon, 08 May 2017)");
  script_name("Joomla! CVE-2017-7988 Security Bypass Vulnerability");
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_dependencies("joomla_http_detect.nasl");
  script_mandatory_keys("joomla/detected");

  script_xref(name:"URL", value:"https://developer.joomla.org/security-centre/688-20170406-core-acl-violations");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/98022");

  script_tag(name:"summary", value:"Joomla is prone to a security bypass 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 inadequate filtering of form contents.");

  script_tag(name:"impact", value:"An attacker can exploit this issue to bypass certain security
  restrictions and perform unauthorized actions. This may aid in launching further attacks.");

  script_tag(name:"affected", value:"Joomla core versions 1.6.0 through 3.6.5");

  script_tag(name:"solution", value:"Upgrade to Joomla version 3.7.0 or later.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"remote_banner");
  exit(0);
}

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

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

if( version_in_range( version:vers, test_version:"1.6.0", test_version2:"3.6.5" ) ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:"3.7.0" );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );