OpenTTD 'NetworkSyncCommandQueue()' Denial of Service Vulnerability

# SPDX-FileCopyrightText: 2010 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.901136");
  script_version("2025-03-05T05:38:52+0000");
  script_tag(name:"last_modification", value:"2025-03-05 05:38:52 +0000 (Wed, 05 Mar 2025)");
  script_tag(name:"creation_date", value:"2010-08-02 12:38:17 +0200 (Mon, 02 Aug 2010)");
  script_cve_id("CVE-2010-2534");
  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_name("OpenTTD 'NetworkSyncCommandQueue()' Denial of Service Vulnerability");
  script_xref(name:"URL", value:"http://secunia.com/advisories/40630");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/41804");
  script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/60568");
  script_xref(name:"URL", value:"http://security.openttd.org/en/CVE-2010-2534");
  script_xref(name:"URL", value:"http://www.vupen.com/english/advisories/2010/1888");

  script_tag(name:"qod_type", value:"registry");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2010 Greenbone AG");
  script_family("Denial of Service");
  script_dependencies("smb_reg_service_pack.nasl");
  script_mandatory_keys("SMB/WindowsVersion");
  script_require_ports(139, 445);
  script_tag(name:"impact", value:"Successful exploitation will allow remote attackers to cause the application
  to fall into an infinite loop, denying service to legitimate users.");
  script_tag(name:"affected", value:"OpenTTD version 1.0.2 and prior.");
  script_tag(name:"insight", value:"The flaw is due to the 'NetworkSyncCommandQueue()' function in
  'src/network/network_command.cpp' not properly resetting the 'next' pointer,
  which can be exploited to trigger an endless loop and exhaust CPU resources
  when joining a server.");
  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"solution", value:"Upgrade to the latest version of OpenTTD 1.0.3 or later.");
  script_tag(name:"summary", value:"OpenTTD is prone to a denial of service (DoS) vulnerability.");
  script_xref(name:"URL", value:"http://www.openttd.org");
  exit(0);
}


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

if(!get_kb_item("SMB/WindowsVersion")){
  exit(0);
}

key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\OpenTTD";
ver = registry_get_sz(key:key, item:"DisplayVersion");

if(ver)
{
  if(version_is_less(version: ver, test_version: "1.0.3")){
    report = report_fixed_ver(installed_version:ver, fixed_version:"1.0.3");
    security_message(port: 0, data: report);
  }
}