Cisco UCS Director SCP User Default Credentials (cisco-sa-20190821-imcs-usercred) - Nessus

Critical Plugin ID: 131946

This page contains detailed information about the Cisco UCS Director SCP User Default Credentials (cisco-sa-20190821-imcs-usercred) 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: 131946
Name: Cisco UCS Director SCP User Default Credentials (cisco-sa-20190821-imcs-usercred)
Filename: cisco-sa-20190821-imcs-usercred.nasl
Vulnerability Published: 2019-08-21
This Plugin Published: 2019-12-11
Last Modification Time: 2019-12-16
Plugin Version: 1.2
Plugin Type: combined
Plugin Family: CISCO
Dependencies: cisco_ucs_director_detect.nbin
Required KB Items [?]: Host/Cisco/UCSDirector/version, Settings/ParanoidReport

Vulnerability Information

Severity: Critical
Vulnerability Published: 2019-08-21
Patch Published: 2019-08-21
CVE [?]: CVE-2019-1935
CPE [?]: cpe:/a:cisco:ucs_director

Synopsis

The remote host is running a vulnerable version of Cisco UCS Director.

Description

According to its self-reported version, the remote host is running a version of Cisco UCS Director that uses default credentials for the 'scpuser' account. A remote attacker can exploit this to log into the system's CLI and execute arbitrary commands with the privileges of the 'scpuser' account, which includes full read and write access to the system's database.

Solution

Apply the patch or upgrade to the version recommended in Cisco bug ID CSCvp19251

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Cisco UCS Director SCP User Default Credentials (cisco-sa-20190821-imcs-usercred) vulnerability:

Metasploit: exploit/linux/ssh/cisco_ucs_scpuser
[Cisco UCS Director default scpuser password]
Exploit-DB: exploits/multiple/remote/47313.txt
[EDB-47313: Cisco UCS Director_ Cisco Integrated Management Controller Supervisor and Cisco UCS Director Express for Big Data - Multiple Vulnerabilities]
Exploit-DB: exploits/unix/remote/47346.rb
[EDB-47346: Cisco UCS Director - default scpuser password (Metasploit)]

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.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS Score Source [?]: CVE-2019-1935
CVSS V2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C

CVSS Base Score:	10.0 (High)
Impact Subscore:	10.0
Exploitability Subscore:	10.0
CVSS Temporal Score:	8.3 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.3 (High)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CVSS Base Score:	9.8 (Critical)
Impact Subscore:	5.9
Exploitability Subscore:	3.9
CVSS Temporal Score:	9.1 (Critical)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	9.1 (Critical)

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Plugin Source

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(131946);
  script_version("1.2");
  script_cvs_date("Date: 2019/12/16");

  script_cve_id("CVE-2019-1935");
  script_xref(name:"CISCO-BUG-ID", value:"CSCvp19251");

  script_name(english:"Cisco UCS Director SCP User Default Credentials (cisco-sa-20190821-imcs-usercred)");
  script_summary(english:"Checks the Cisco UCS Director version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is running a vulnerable version of Cisco UCS Director.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the remote host is running a version of Cisco UCS Director that uses default
credentials for the 'scpuser' account. A remote attacker can exploit this to log into the system's CLI and execute
arbitrary commands with the privileges of the 'scpuser' account, which includes full read and write access to the
system's database.");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvp19251");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-imcs-usercred
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dcc6a19b");
  script_set_attribute(attribute:"solution", value:
"Apply the patch or upgrade to the version recommended in Cisco bug ID CSCvp19251");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-1935");

  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:'Cisco UCS Director default scpuser password');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/08/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/08/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/11");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:ucs_director");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CISCO");

  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("cisco_ucs_director_detect.nbin");
  script_require_keys("Host/Cisco/UCSDirector/version", "Settings/ParanoidReport");

  exit(0);
}

include('vcf.inc');

# Paranoid due to workaround
if (report_paranoia < 2) audit(AUDIT_PARANOID);

app_info = vcf::get_app_info(app:'Cisco UCS Director', kb_ver:'Host/Cisco/UCSDirector/version');

constraints = [
  { 'min_version':'6.0.0.0', 'fixed_version': '6.7.2.0', 'fixed_display': '6.7.2.0 and later (recommended: 6.7.3.0)'}
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/cisco-sa-20190821-imcs-usercred.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\cisco-sa-20190821-imcs-usercred.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/cisco-sa-20190821-imcs-usercred.nasl

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How to Run

Here is how to run the Cisco UCS Director SCP User Default Credentials (cisco-sa-20190821-imcs-usercred) 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 CISCO plugin family.
On the right side table select Cisco UCS Director SCP User Default Credentials (cisco-sa-20190821-imcs-usercred) plugin ID 131946.
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 cisco-sa-20190821-imcs-usercred.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a cisco-sa-20190821-imcs-usercred.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - cisco-sa-20190821-imcs-usercred.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 cisco-sa-20190821-imcs-usercred.nasl -t <IP/HOST>

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References

Cisco Bug ID:

CSCvp19251

See also:

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Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file cisco-sa-20190821-imcs-usercred.nasl version 1.2. For more plugins, visit the Nessus Plugin Library.

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Cisco UCS Director SCP User Default Credentials (cisco-sa-20190821-imcs-usercred) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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