Cisco Web Security Appliance Default Credentials (HTTP)

# SPDX-FileCopyrightText: 2015 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("1.3.6.1.4.1.25623.1.0.105443");
  script_version("2023-07-05T05:06:18+0000");
  script_tag(name:"last_modification", value:"2023-07-05 05:06:18 +0000 (Wed, 05 Jul 2023)");
  script_tag(name:"creation_date", value:"2015-11-09 14:41:14 +0100 (Mon, 09 Nov 2015)");
  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_tag(name:"qod_type", value:"exploit");

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

  script_name("Cisco Web Security Appliance Default Credentials (HTTP)");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2015 Greenbone AG");
  script_family("CISCO");
  script_dependencies("gb_cisco_wsa_web_detect.nasl", "gb_default_credentials_options.nasl");
  script_require_ports("Services/www", 443);
  script_mandatory_keys("cisco_wsa/http/cookie", "cisco_wsa/http/port");
  script_exclude_keys("default_credentials/disable_default_account_checks");

  script_tag(name:"summary", value:"The remote Cisco Web Security Appliance web interface is using
  known default credentials.");

  script_tag(name:"vuldetect", value:"Try to login with default credentials.");

  script_tag(name:"impact", value:"This issue may be exploited by a remote attacker to gain access
  to sensitive information or modify system configuration.");

  script_tag(name:"insight", value:"It was possible to login with default credentials:
  admin/ironport");

  script_tag(name:"solution", value:"Change the password.");

  exit(0);
}

if( get_kb_item( "default_credentials/disable_default_account_checks" ) )
  exit( 0 );

include("http_func.inc");
include("http_keepalive.inc");

if( ! port = get_kb_item( "cisco_wsa/http/port" ) )
  exit( 0 );
if( ! cookie = get_kb_item( "cisco_wsa/http/cookie" ) )
  exit( 0 );

postdata = "action=Login&referrer=&screen=login&username=admin&password=ironport";
len = strlen( postdata );

url = "/login";
useragent = http_get_user_agent();
host = http_host_name( port:port );

req = 'POST ' + url + ' HTTP/1.1\r\n' +
      'Connection: Close\r\n' +
      'Host: ' + host + '\r\n' +
      'Pragma: no-cache\r\n' +
      'Cache-Control: no-cache\r\n' +
      'User-Agent: ' + useragent + '\r\n' +
      'Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*\r\n' +
      'Accept-Language: en\r\n' +
      'Accept-Encoding: identify\r\n' +
      'Cookie: ' + cookie + '\r\n' +
      'Accept-Charset: iso-8859-1,*,utf-8\r\n' +
      'X-Requested-With: XMLHttpRequest\r\n' +
      'Content-Type: application/x-www-form-urlencoded; charset=UTF-8\r\n' +
      'Content-Length: ' + len + '\r\n' +
      '\r\n' +
      postdata;
res = http_keepalive_send_recv( port:port, data:req );

if( "authenticated" >!< res )
  exit( 99 );

ac = eregmatch( pattern:"Set-Cookie: (authenticated=[^;]+;)", string:res );
if( isnull( ac[1] ) )
  exit( 0 );

cookie = ac[1] + cookie;

if( http_vuln_check( port:port, url:"/monitor/wsa_user_report", pattern:"action=Logout",
                     extra_check:make_list( "System Status","Logged in as" ), cookie:cookie ) ) {
  report = http_report_vuln_url( port:port, url:url );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );