Webnews.exe Buffer Overflow Vulnerability

# SPDX-FileCopyrightText: 2003 John Lampe
# 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("1.3.6.1.4.1.25623.1.0.11732");
  script_version("2025-04-11T05:40:28+0000");
  script_tag(name:"last_modification", value:"2025-04-11 05:40:28 +0000 (Fri, 11 Apr 2025)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_cve_id("CVE-2002-0290");
  script_name("Webnews.exe Buffer Overflow Vulnerability");
  script_category(ACT_ATTACK); # nb: Direct access to a .exe file might be already seen as an attack
  script_copyright("Copyright (C) 2003 John Lampe");
  script_family("Web application abuses");
  script_dependencies("find_service.nasl", "no404.nasl", "webmirror.nasl",
                      "DDI_Directory_Scanner.nasl", "os_detection.nasl", "global_settings.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("Host/runs_windows");
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_xref(name:"URL", value:"http://archives.neohapsis.com/archives/bugtraq/2002-02/0186.html");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/4124");

  script_tag(name:"solution", value:"Apply the patch made released by the vendor on February 14th, 2002 if
  running Webnews 1.1 or older.");

  script_tag(name:"summary", value:"The remote host appears to be running WebNews, which offers web-based
  access to Usenet news. This CGI script suffers from a buffer overflow vulnerability.");

  script_tag(name:"impact", value:"An attacker may be able to leverage this issue to execute arbitrary shell
  code on the remote host subject to the permissions of the web server user id.");

  script_tag(name:"insight", value:"Some versions of WebNews are prone to a buffer overflow when
  processing a query string with an overly-long group parameter.");

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

  exit(0);
}

include("http_func.inc");
include("http_404.inc");
include("http_keepalive.inc");
include("port_service_func.inc");
include("list_array_func.inc");

port = http_get_port( default:80 );

foreach dir( make_list_unique( "/", http_cgi_dirs( port:port ) ) ) {

  if( dir == "/" ) dir = "";
  url = dir + "/Webnews.exe";

  if( http_is_cgi_installed_ka( item:url, port:port ) ) {
    report = http_report_vuln_url( port:port, url:url );
    security_message( port:port, data:report );
    exit( 0 );
  }
}

exit( 0 );