C.H.I.P. Device Default Credentials (SSH)

# SPDX-FileCopyrightText: 2017 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("1.3.6.1.4.1.25623.1.0.108164");
  script_version("2026-03-17T05:57:28+0000");
  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:"last_modification", value:"2026-03-17 05:57:28 +0000 (Tue, 17 Mar 2026)");
  script_tag(name:"creation_date", value:"2017-05-18 13:24:16 +0200 (Thu, 18 May 2017)");
  script_name("C.H.I.P. Device Default Credentials (SSH)");
  script_category(ACT_ATTACK);
  script_family("Default Accounts");
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_dependencies("ssh_detect.nasl", "os_detection.nasl",
                      "gb_default_credentials_options.nasl");
  script_require_ports("Services/ssh", 22);
  script_mandatory_keys("ssh/server_banner/available", "Host/runs_unixoide");
  script_exclude_keys("default_credentials/disable_default_account_checks");

  script_tag(name:"summary", value:"The remote C.H.I.P. device is using known 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:"vuldetect", value:"Tries to login with known credentials.");

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

  script_tag(name:"solution_type", value:"Workaround");
  script_tag(name:"qod_type", value:"exploit");

  exit(0);
}

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

include("host_details.inc");
include("os_func.inc");
include("ssh_func.inc");
include("misc_func.inc");
include("traversal_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 );

password = "chip";
report = 'It was possible to login to the remote C.H.I.P. Device via SSH with the following credentials:\n';

files = traversal_files( "linux" );

foreach username( make_list( "root", "chip" ) ) {

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

  login = ssh_login( socket:soc, login:username, password:password, priv:NULL, passphrase:NULL );
  if( login == 0 ) {

    foreach pattern( keys( files ) ) {

      file = files[pattern];

      cmd = ssh_cmd( socket:soc, cmd:"cat /" + file );

      if( passwd = egrep( pattern:pattern, string:cmd ) ) {
        vuln = TRUE;
        report += '\nUsername: "' + username  + '", Password: "' + password + '"';
        passwd_report += '\nIt was also possible to execute "cat /' + file + '" as "' + username + '". Result:\n\n' + passwd;
      }
    }
  }
  close( soc );
}

if( vuln ) {
  if( passwd_report ) report += '\n' + passwd_report;
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );