Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-authby) - Nessus

Critical Plugin ID: 128120

This page contains detailed information about the Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-authby) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

hide

Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 128120
Name: Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-authby)
Filename: cisco-sa-20190821-imcs-ucs-authby.nasl
Vulnerability Published: 2019-08-21
This Plugin Published: 2019-08-26
Last Modification Time: 2021-06-03
Plugin Version: 1.5
Plugin Type: combined
Plugin Family: CISCO
Dependencies: cisco_ucs_director_detect.nbin
Required KB Items [?]: Host/Cisco/UCSDirector/version

Vulnerability Information

Severity: Critical
Vulnerability Published: 2019-08-21
Patch Published: 2019-08-21
CVE [?]: CVE-2019-1937
CPE [?]: cpe:/a:cisco:ucs_director

Synopsis

The remote host is affected by an authentication bypass vulnerability.

Description

According to its self-reported version, the remote host is running a version of Cisco UCS Director that is affected by an authentication bypass vulnerability. An unauthenticated, remote attacker can exploit this to bypass authentication and execute arbitrary actions with administrative privileges.

Solution

Apply the patch or upgrade to the version recommended in Cisco bug ID CSCvp19229

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 Authentication Bypass (cisco-sa-20190821-imcs-ucs-authby) vulnerability:

Metasploit: exploit/linux/http/cisco_ucs_rce
[Cisco UCS Director Unauthenticated Remote Code Execution]
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]

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-2019-1937
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)

STIG Severity [?]: II
STIG Risk Rating: Medium

Go back to menu.

Plugin Source

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

include("compat.inc");

if (description)
{
  script_id(128120);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/06/03");

  script_cve_id("CVE-2019-1937");
  script_xref(name:"CISCO-BUG-ID", value:"CSCvp19229");
  script_xref(name:"IAVA", value:"2019-A-0312-S");

  script_name(english:"Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-authby)");
  script_summary(english:"Checks the Cisco UCS Director version.");

  script_set_attribute(attribute:"synopsis", value:"The remote host is affected by an authentication bypass vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the remote host is running a version of Cisco UCS Director that is affected by
an authentication bypass vulnerability. An unauthenticated, remote attacker can exploit this to bypass authentication
and execute arbitrary actions with administrative privileges.");
  script_set_attribute(attribute:"see_also", value:"https://tools.cisco.com/bugsearch/bug/CSCvp19229");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-imcs-ucs-authby
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5315f485");
  script_set_attribute(attribute:"solution", value:
"Apply the patch or upgrade to the version recommended in Cisco bug ID CSCvp19229");
  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-2019-1937");
  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 Unauthenticated Remote Code Execution');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"combined");

  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:"2019/08/26");

  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:ucs_director");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CISCO");

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

  exit(0);
}

include('vcf.inc');

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

constraints = [
  { 'min_version':'6.6.0.0', 'max_version':'6.6.1.0', 'fixed_version': '6.7.2.0'},
  { 'min_version':'6.7.0.0', 'max_version':'6.7.1.0', 'fixed_version': '6.7.2.0'}
];

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-ucs-authby.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\cisco-sa-20190821-imcs-ucs-authby.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/cisco-sa-20190821-imcs-ucs-authby.nasl

Go back to menu.

How to Run

Here is how to run the Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-authby) 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 Authentication Bypass (cisco-sa-20190821-imcs-ucs-authby) plugin ID 128120.
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-ucs-authby.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

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

Go back to menu.

References

IAVA | Information Assurance Vulnerability Alert:

2019-A-0312-S

Cisco Bug ID:

CSCvp19229

See also:

Similar and related Nessus plugins:

109402 - Cisco Unified Communication Manager HTTP Interface Information Disclosure Vulnerability (CSCvf20218)
109404 - Cisco ASA Multiple Vulnerabilities (cisco-sa-20180418-asa1 / cisco-sa-20180418-asa2 / cisco-sa-20180418-asa3 / cisco-sa-20180418-asaanyconnect / cisco-sa-20180418-asa_inspect)
110686 - Cisco ASA Web Services DoS (cisco-sa-20180606-asaftd)
112219 - Cisco Identity Services Engine Struts2 Namespace Vulnerability
112288 - Cisco Unified Communications Manager IM & Presence Service Apache Struts RCE (CSCvm14049)
112289 - Cisco Unified Communication Manager Apache Struts RCE (CSCvm14042)
118088 - Cisco Prime Infrastructure TFTP Arbitrary File Upload and Command Execution Vulnerability (cisco-sa-20181003-pi-tftp)
118145 - Cisco Prime Infrastructure TFTP Arbitrary File Upload and Command Execution Vulnerability (cisco-sa-20181003-pi-tftp)
122483 - Cisco RV110W, RV130W, and RV215W Routers Management Interface Remote Command Execution Vulnerability (cisco-sa-20190227-rmi-cmd-ex)
123415 - Cisco Application Policy Infrastructure Controller Linux Kernel IP Fragment Reassembly DoS
123515 - Cisco IOS XE Software Linux Kernel IP Fragment DoS (cisco-sa-20180824-linux-ip-fragment)
123793 - Cisco IOS XE Software Gigabit Ethernet Management Interface Access Control List Bypass Vulnerability
124060 - Cisco Small Business RV320 and RV325 Routers Multiple Vulnerabilities (cisco-sa-20190123-rv-inject, cisco-sa-20190123-rv-info)
124172 - Cisco FTD Web Services DoS (cisco-sa-20180606-asaftd)
124774 - Cisco Firepower Management Center XSS Vulnerability
126640 - Cisco Data Center Network Manager Arbitrary File Upload and Remote Code Execution Vulnerability
126643 - Cisco Data Center Network Manager < 11.1(1) Authentication Bypass Vulnerability
128685 - Cisco Data Center Network Manager Information Disclosure Vulnerability
129291 - Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-cmdinj)
130503 - Cisco Prime Infrastructure Multiple Vulnerabilities (cisco-sa-20190515-pi-rce)
131230 - Cisco Wireless LAN Controller HTTP Parsing Engine Denial of Service Vulnerability
131427 - Cisco IOS XE NGWC Legacy Wireless Device Manager GUI CSRF Vulnerability (cisco-sa-20190821-iosxe-ngwc-csrf)
131739 - Cisco Unified Communications Manager SQL Injection Vulnerability
131946 - Cisco UCS Director SCP User Default Credentials (cisco-sa-20190821-imcs-usercred)
132414 - Cisco NX-OS Software CLI Command Injection Vulnerability (Cisco-Sa-20190306-Nxos-Cmdinj-1609)
132721 - Cisco Data Center Network Manager < 11.3(1) Multiple Vulnerabilities
133044 - Cisco FTD Multiple Vulnerabilities (cisco-sa-20180418-asa1 / cisco-sa-20180418-asa2 / cisco-sa-20180418-asa3 / cisco-sa-20180418-asaanyconnect / cisco-sa-20180418-asa_inspect)
133603 - Cisco IOS XR Software Cisco Discovery Protocol Remote Code Execution Vulnerability (cisco-sa-20200205-iosxr-cdp-rce)
133604 - Cisco NX-OS Software Cisco Discovery Protocol Remote Code Execution Vulnerability (cisco-sa-20200205-nxos-cdp-rce)
133720 - Cisco FXOS Software Cisco Discovery Protocol Denial of Service Vulnerability (cisco-sa-20200205-fxnxos-iosxr-cdp-dos)
133721 - Cisco IOS XR Software Cisco Discovery Protocol Denial of Service Vulnerability (cisco-sa-20200205-fxnxos-iosxr-cdp-dos)
133722 - Cisco NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerability (cisco-sa-20200205-fxnxos-iosxr-cdp-dos)
134234 - Cisco FXOS Software Cisco Discovery Protocol Arbitrary Code Execution and DoS (cisco-sa-20200226-fxos-nxos-cdp)
134235 - Cisco NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and DoS (cisco-sa-20200226-fxos-nxos-cdp)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file cisco-sa-20190821-imcs-ucs-authby.nasl version 1.5. For more plugins, visit the Nessus Plugin Library.

Go back to menu.

Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-authby) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

Nessus Plugin Library

Solving Problems with Office 365 Email from GoDaddy

Empire Module Library

CrackMapExec Module Library

Metasploit Android Modules

Top 16 Active Directory Vulnerabilities

Top 10 Vulnerabilities: Internal Infrastructure Pentest

Terminal Escape Injection

Cisco Password Cracking and Decrypting Guide

Capture Passwords using Wireshark

SSH Brute Force Attack Tool using PuTTY / Plink (ssh-putty-brute.ps1)

SMB Brute Force Attack Tool in PowerShell (SMBLogin.ps1)

Port Scanner in PowerShell (TCP/UDP)

Nessus CSV Parser and Extractor

Default Password Scanner (default-http-login-hunter.sh)