Greenbone Security Assistant 6.0 < 6.0.9 DoS 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:greenbone:greenbone_security_assistant";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.108195");
  script_version("2024-06-12T05:05:44+0000");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"last_modification", value:"2024-06-12 05:05:44 +0000 (Wed, 12 Jun 2024)");
  script_tag(name:"creation_date", value:"2017-07-26 13:00:00 +0200 (Wed, 26 Jul 2017)");
  script_name("Greenbone Security Assistant 6.0 < 6.0.9 DoS Vulnerability");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_greenbone_gsa_http_detect.nasl");
  script_mandatory_keys("greenbone/gsa/detected");

  script_xref(name:"URL", value:"http://openvas.org/OVSA20160202.html");

  script_tag(name:"summary", value:"Greenbone Security Assistant (GSA) is prone to a denial of
  service (DoS) vulnerability.");

  script_tag(name:"insight", value:"The flaw exists due to an improper handling of UTF-8 in GET and POST requests.");

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

  script_tag(name:"impact", value:"Given the attacker has access to a GSA web interface, a respective HTTP request can crash gsad.");

  script_tag(name:"affected", value:"Greenbone Security Assistant version 6.0.x before 6.0.9.");

  script_tag(name:"solution", value:"Update Greenbone Security Assistant to version 6.0.9 or later.");

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

  exit(0);
}

include("host_details.inc");
include("version_func.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:"6.0.0", test_version2:"6.0.8" ) ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:"6.0.9" );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );