Nortel Default Username and Password (SSH)

# SPDX-FileCopyrightText: 2004 Noam Rathaus
# 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("1.3.6.1.4.1.25623.1.0.15715");
  script_version("2023-12-20T05:05:58+0000");
  script_tag(name:"last_modification", value:"2023-12-20 05:05:58 +0000 (Wed, 20 Dec 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  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_name("Nortel Default Username and Password (SSH)");
  script_category(ACT_ATTACK);
  script_family("Default Accounts");
  script_copyright("Copyright (C) 2004 Noam Rathaus");
  script_dependencies("ssh_detect.nasl", "gb_default_credentials_options.nasl");
  script_require_ports("Services/ssh", 22);
  script_mandatory_keys("ssh/server_banner/available");
  script_exclude_keys("default_credentials/disable_default_account_checks");

  script_tag(name:"summary", value:"The username/password combination 'ro/ro' or 'rwa/rwa' are
  valid.");

  script_tag(name:"insight", value:"These username and password are the default ones for many of
  Nortel's network devices.");

  script_tag(name:"solution", value:"Set a strong password for the account.");

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

  exit(0);
}

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

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

port = ssh_get_port( default:22 );

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

# nb: No need to continue/start if we haven't received any banner...
if( ! ssh_get_serverbanner( port:port ) )
  exit( 0 );

# Exit if any random user/pass pair is accepted by the SSH service.
if( ssh_broken_random_login( port:port ) )
  exit( 0 );

creds = make_array(
  "ro", "ro",
  "rwa", "rwa"
);

report = 'The following default credentials were identified: (user:pass)\n';

foreach cred( keys( creds ) ) {

  if( ! soc = open_sock_tcp( port ) )
    continue;

  ret = ssh_login( socket:soc, login:cred, password:creds[cred] );
  close( soc );
  if( ret == 0 ) {
    VULN = TRUE;
    report += '\n' + cred + ":" + creds[cred];
  }
}

if( VULN ) {
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );