nginx 'ngx_http_process_request_headers()' Remote Buffer Overflow Vulnerability

# SPDX-FileCopyrightText: 2009 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:nginx:nginx";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.100321");
  script_version("2023-07-27T05:05:08+0000");
  script_tag(name:"last_modification", value:"2023-07-27 05:05:08 +0000 (Thu, 27 Jul 2023)");
  script_tag(name:"creation_date", value:"2009-10-28 11:13:14 +0100 (Wed, 28 Oct 2009)");
  script_cve_id("CVE-2009-3896");
  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("nginx 'ngx_http_process_request_headers()' Remote Buffer Overflow Vulnerability");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/36839");
  script_xref(name:"URL", value:"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=552035");

  script_tag(name:"qod_type", value:"remote_banner_unreliable");
  script_category(ACT_GATHER_INFO);
  script_family("Web Servers");
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_dependencies("gb_nginx_consolidation.nasl");
  script_mandatory_keys("nginx/detected");

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

  script_tag(name:"solution", value:"Updates are available. Please see the references for more information.");

  script_tag(name:"summary", value:"nginx is prone to a buffer-overflow vulnerability
  because the application fails to perform adequate boundary checks on user-supplied data.");

  script_tag(name:"impact", value:"Attackers can exploit this issue to execute arbitrary code within the context
  of the affected application. Failed exploit attempts will result in a denial-of-service condition.");

  exit(0);
}

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

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

if( ! infos = get_app_version_and_location( cpe: CPE, port: port, exit_no_version: TRUE ) )
  exit( 0 );

version = infos["version"];
location = infos["location"];

if( version_in_range( version: version, test_version: "0.7", test_version2: "0.7.61" ) ||
    version_in_range( version: version, test_version: "0.6", test_version2: "0.6.38" ) ||
    version_in_range( version: version, test_version: "0.5", test_version2: "0.5.37" ) ||
    version_in_range( version: version, test_version: "0.4", test_version2: "0.4.14" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "See advisory", install_path: location );
  security_message( port: port, data: report );
  exit( 0 );
}

exit( 99 );