MikroTik RouterOS with Blank Password (telnet check) - Nessus

Critical Plugin ID: 30213

This page contains detailed information about the MikroTik RouterOS with Blank Password (telnet check) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 30213
Name: MikroTik RouterOS with Blank Password (telnet check)
Filename: mikrotik_blank_password.nasl
Vulnerability Published: N/A
This Plugin Published: 2008-02-11
Last Modification Time: 2022-04-11
Plugin Version: 1.12
Plugin Type: remote
Plugin Family: Misc.
Dependencies: find_service1.nasl
Excluded KB Items [?]: global_settings/supplied_logins_only

Vulnerability Information

Severity: Critical
Vulnerability Published: N/A
Patch Published: N/A
CVE [?]: CVE-1999-0508
CPE [?]: cpe:/o:mikrotik:routeros

Synopsis

A remote router has no password for its admin account.

Description

The remote host is running MikroTik RouterOS without a password for its 'admin' account. Anyone can connect to it and gain administrative access to it.

Solution

Public Exploits

Target Network Port(s): 23
Target Asset(s): Services/telnet
Exploit Available: True (Metasploit Framework)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the MikroTik RouterOS with Blank Password (telnet check) vulnerability:

Metasploit: auxiliary/scanner/snmp/snmp_login
[SNMP Community Scanner]
Metasploit: auxiliary/scanner/snmp/snmp_login
[SNMP Community Login Scanner]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

Risk Information

CVSS V2 Vector [?]: AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Base Score:	10.0 (High)
Impact Subscore:	10.0
Exploitability Subscore:	10.0
CVSS Temporal Score:	NA (None)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	10.0 (High)

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

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

if (description)
{
  script_id(30213);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-1999-0508");

  script_name(english:"MikroTik RouterOS with Blank Password (telnet check)");

  script_set_attribute(attribute:"synopsis", value:
"A remote router has no password for its admin account.");
  script_set_attribute(attribute:"description", value:
"The remote host is running MikroTik RouterOS without a password for its
'admin' account.  Anyone can connect to it and gain administrative
access to it.");
  script_set_attribute(attribute:"see_also", value:"https://mikrotik.com/documentation");
  script_set_attribute(attribute:"solution", value:
"Log in to the device and configure a password using the '/password'
command.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'SNMP Community Scanner');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_publication_date", value:"2008/02/11");

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

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2008-2022 Tenable Network Security, Inc.");

  script_dependencies("find_service1.nasl");
  script_exclude_keys("global_settings/supplied_logins_only");
  script_require_ports("Services/telnet", 23);

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("telnet_func.inc");
include('misc_func.inc');

port = get_service(svc:"telnet", default:23, exit_on_fail:TRUE);

banner = get_telnet_banner(port:port);
if (!banner || "MikroTik" >!< banner) audit(AUDIT_NOT_LISTEN, "MikroTik", port);

if (supplied_logins_only) audit(AUDIT_SUPPLIED_LOGINS_ONLY);

user = "admin";
pass = "";


soc = open_sock_tcp(port);
if (!soc) audit(AUDIT_SOCK_FAIL, port);

res = telnet_negotiate(socket:soc);
res += recv_until(socket:soc, pattern:"ogin:");
if (!res)
{
  close(soc);
  exit(0);
}
send(socket:soc, data:user+'\r\n');

res = recv_until(socket:soc, pattern:"word:");
if (!res)
{
  close(soc);
  exit(0);
}
send(socket:soc, data:pass+'\r\n');

res = recv_until(socket:soc, pattern:"MikroTik RouterOS");
close(soc);

if (res) security_hole(port);
else audit(AUDIT_HOST_NOT, "affected");

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/mikrotik_blank_password.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\mikrotik_blank_password.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/mikrotik_blank_password.nasl

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How to Run

Here is how to run the MikroTik RouterOS with Blank Password (telnet check) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Misc. plugin family.
On the right side table select MikroTik RouterOS with Blank Password (telnet check) plugin ID 30213.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl mikrotik_blank_password.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a mikrotik_blank_password.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - mikrotik_blank_password.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state mikrotik_blank_password.nasl -t <IP/HOST>

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References

See also:

Similar and related Nessus plugins:

10747 - 3Com Superstack 3 Switch Multiple Default Accounts
18415 - Bay Networks Accelar 1200 Switch Default Password (password) for 'usrname' Account
18414 - Allied Telesyn Router/Switch Default Password
18413 - Allied Telesyn Router/Switch Web Interface Default Password
17638 - Avaya P330 Stackable Switch Default Password
10961 - AirConnect Default Password
11202 - Enhydra Multiserver Default Password
10820 - F5 Device Default Support Password
10995 - Sun JavaServer Default Admin Password
10998 - Shiva LanRover Blank Password
10999 - Linksys Router Default Password
11203 - Motorola Vanguard with No Password (telnet check)
10798 - Symantec pcAnywhere Service Unrestricted Access
10778 - SiteScope Web Service Unpassworded Access
11004 - Ipswitch WhatsUp Gold Default Admin Account
40354 - OpenWrt Router with a Blank Password (telnet check)
10345 - Cayman DSL Router Unauthenticated Access
10483 - PostgreSQL Default Unpassworded Account
10500 - Shiva Integrator Default Password
70942 - MikroTik RouterOS 5.x < 5.26 / 6.x < 6.3 sshd Unspecified Remote Heap Corruption
108521 - MikroTik RouterOS < 6.40.7 or 6.41.x < 6.41.3 SMB Buffer Overflow
130432 - MikroTik RouterOS < 6.44.6 LTS or 6.45.x < 6.45.7 Multiple Vulnerabilities
117335 - MikroTik RouterOS Winbox Unauthenticated Arbitrary File Read/Write Vulnerability
123797 - MikroTik RouterOS Unauthenticated Intermediary
134714 - MikroTik RouterOS DNS Cache Poisoning (CVE-2019-3978)
103857 - MikroTik RouterOS < 6.39.3 / 6.40.4 / 6.41rc (KRACK)
10827 - SysV /bin/login Environment Remote Overflow (telnet check)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file mikrotik_blank_password.nasl version 1.12. For more plugins, visit the Nessus Plugin Library.

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MikroTik RouterOS with Blank Password (telnet check) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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