Unprotected MongoDB Service (TCP)

# 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

CPE = "cpe:/a:mongodb:mongodb";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.105235");
  script_version("2026-01-09T05:47:51+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:"2026-01-09 05:47:51 +0000 (Fri, 09 Jan 2026)");
  script_tag(name:"creation_date", value:"2015-03-13 09:16:37 +0100 (Fri, 13 Mar 2015)");
  script_name("Unprotected MongoDB Service (TCP)");

  # nb: User login try could be already seen as an attack
  script_category(ACT_ATTACK);
  script_family("Databases");
  script_copyright("Copyright (C) 2015 Greenbone AG");
  script_dependencies("gb_mongodb_wire_protocol_detect.nasl", "gb_default_credentials_options.nasl");
  script_require_ports("Services/mongodb", 27017);
  script_mandatory_keys("mongodb/wire_protocol/detected");
  script_exclude_keys("default_credentials/disable_default_account_checks");

  script_tag(name:"summary", value:"The remote MongoDB service is unprotected.");

  script_tag(name:"vuldetect", value:"Send a local.startup_log query and check the response.");

  script_tag(name:"impact", value:"Attackers can exploit this issue to obtain sensitive information
  that may lead to further attacks.");

  script_tag(name:"solution", value:"Enable authentication or restrict access to the MongoDB
  service.");

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

  exit(0);
}

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

# nb: Don't exit via islocalhost() or the net_setting_is_* functions here as such a database should
# be definitely access protected.

include("byte_func.inc");
include("dump.inc");
include("misc_func.inc");
include("host_details.inc");

if( ! port = get_app_port( cpe:CPE, service:"mongodb" ) )
  exit( 0 );

if( ! get_app_location( cpe:CPE, port:port, nofork:TRUE ) )
  exit( 0 );

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

req = raw_string( 0x33, 0x00, 0x00, 0x00, 0x6f, 0x76, 0x61, 0x73, 0x00, 0x00, 0x00, 0x00, 0xd4, 0x07, 0x00, 0x00,
                  0x00, 0x00, 0x00, 0x00, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x2e, 0x73, 0x74, 0x61, 0x72, 0x74, 0x75,
                  0x70, 0x5f, 0x6c, 0x6f, 0x67, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x05, 0x00,
                  0x00, 0x00, 0x00 );
send( socket:soc, data:req );

buf = recv( socket:soc, length:4 );
if( ! buf || strlen( buf ) != 4 ) {
  close( soc );
  exit( 0 );
}

set_byte_order( BYTE_ORDER_LITTLE_ENDIAN );
size = getdword( blob:buf, pos:0 );

if( size <= 4 || size > 10485760 ) {
  close( soc );
  exit( 0 );
}

buf = recv( socket:soc, length:( size - 4 ) );
close( soc );

buf = bin2string( ddata:buf, noprint_replacement:" " );
if( buf )
  buf = ereg_replace( pattern:" {2,}", replace:'\n', string:buf );

if( "ovas" >< buf && ( "mongodb.conf" >< buf || "hostname" >< buf || "gitVersion" >< buf || "buildEnvironment" >< buf || "sysInfo" >< buf ) &&
    "not authorized for query on local.startup_log" >!< buf && "$err" >!< buf ) {
  security_message( port:port );
  exit( 0 );
}

exit( 99 );