F5 Device Default Support Password - Nessus

Critical   Plugin ID: 10820

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This page contains detailed information about the F5 Device Default Support Password Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Plugin Overview

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ID: 10820
Name: F5 Device Default Support Password
Filename: DDI_F5_Default_Support.nasl
Vulnerability Published: N/A
This Plugin Published: 2001-12-06
Last Modification Time: 2020-06-12
Plugin Version: 1.18
Plugin Type: remote
Plugin Family: Misc.
Dependencies: http_version.nasl
Excluded KB Items [?]: global_settings/supplied_logins_only

Vulnerability Information

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

Synopsis

The remote service is protected with default administrative credentials.

Description

The remote F5 Networks device has the default password set for the 'support' user account. This account normally provides read/write access to the web configuration utility. An attacker could take advantage of this to reconfigure your systems and possibly gain shell access to the system with super-user privileges.

Solution

Remove the 'support' account entirely or change the password of this account to something that is difficult to guess.

Public Exploits

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Target Network Port(s): 443
Target Asset(s): Services/www
Exploit Available: True (Metasploit Framework)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the F5 Device Default Support Password vulnerability:

1. Metasploit: auxiliary/scanner/snmp/snmp_login
   [SNMP Community Scanner]
2. 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

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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

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This is the DDI_F5_Default_Support.nasl nessus plugin source code. This script is Copyright (C) 2001-2020 Digital Defense Inc.

#
# Copyright 2001 by H D Moore <[email protected]>
#
# See the Nessus Scripts License for details
#

# Changes by Tenable:
# - Output formatting, family change (8/22/09)

include("compat.inc");

if (description)
{
  script_id(10820);
  script_version("1.18");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/12");

  script_cve_id("CVE-1999-0508");

  script_name(english:"F5 Device Default Support Password");
  script_summary(english:"F5 Device Default Support Password");

  script_set_attribute(attribute:"synopsis", value:
"The remote service is protected with default administrative
credentials.");
  script_set_attribute(attribute:"description", value:
"The remote F5 Networks device has the default password set for the
'support' user account.  This account normally provides read/write
access to the web configuration utility.  An attacker could take
advantage of this to reconfigure your systems and possibly gain shell
access to the system with super-user privileges.");
 script_set_attribute(attribute:"solution", value:
"Remove the 'support' account entirely or change the password of this
account to something that is difficult to guess.");
  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:"2001/12/06");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2001-2020 Digital Defense Inc.");
  script_family(english:"Misc.");

  script_dependencies("http_version.nasl");
  script_exclude_keys("global_settings/supplied_logins_only");
  script_require_ports("Services/www", 443);
  exit(0);
}

#
# The script code starts here
#

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http_func.inc");
include("http_keepalive.inc");

if (supplied_logins_only) audit(AUDIT_SUPPLIED_LOGINS_ONLY);

port = get_http_port(default:443, embedded:TRUE);
if (!get_port_state(port)) audit(AUDIT_PORT_CLOSED, port);

user = 'support';
pass = 'support';

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

req = string("GET /bigipgui/bigconf.cgi?command=bigcommand&CommandType=bigpipe HTTP/1.0\r\nAuthorization: Basic ", base64(str:user+':'+pass), "\r\n\r\n");
send(socket:soc, data:req);
buf = http_recv(socket:soc);
http_close_socket(soc);

if (!isnull(buf) && ("/bigipgui/" >< buf) && ("System Command" >< buf))
{
  if (report_verbosity > 0)
  {
    report = '\n  User     : ' + user +
             '\n  Password : ' + pass +
             '\n';
    security_hole(port:port, extra:report);
  }
  else security_hole(port);
  set_kb_item(name:"Services/www/" + port + "/embedded", value:TRUE);
}
else exit(0, "The web server listening on port "+port+" is 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/DDI_F5_Default_Support.nasl
• Windows:
  C:\ProgramData\Tenable\Nessus\nessus\plugins\DDI_F5_Default_Support.nasl
• Mac OS X:
  /Library/Nessus/run/lib/nessus/plugins/DDI_F5_Default_Support.nasl

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How to Run

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Here is how to run the F5 Device Default Support Password as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

1. Click to start a New Scan.
2. Select Advanced Scan.
3. Navigate to the Plugins tab.
4. On the top right corner click to Disable All plugins.
5. On the left side table select Misc. plugin family.
6. On the right side table select F5 Device Default Support Password plugin ID 10820.
7. Specify the target on the Settings tab and click to Save the scan.
8. 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 DDI_F5_Default_Support.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a DDI_F5_Default_Support.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - DDI_F5_Default_Support.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 DDI_F5_Default_Support.nasl -t <IP/HOST>

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References

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See also:

• https://www.tenable.com/plugins/nessus/10820
• https://vulners.com/nessus/DDI_F5_DEFAULT_SUPPORT.NASL

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Version

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This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file DDI_F5_Default_Support.nasl version 1.18. For more plugins, visit the Nessus Plugin Library.

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