Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-cmdinj) - Nessus
High Plugin ID: 129291This page contains detailed information about the Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-cmdinj) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.
Plugin Overview
ID: 129291
Name: Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-cmdinj)
Filename: cisco-sa-20190821-imcs-ucs-cmdinj.nasl
Vulnerability Published: 2019-08-21
This Plugin Published: 2019-09-24
Last Modification Time: 2019-09-26
Plugin Version: 1.3
Plugin Type: combined
Plugin Family: CISCO
Dependencies:
cisco_ucs_director_detect.nbin
Required KB Items [?]: Host/Cisco/UCSDirector/version
Vulnerability Information
Severity: High
Vulnerability Published: 2019-08-21
Patch Published: 2019-08-21
CVE [?]: CVE-2019-1936
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 a command execution vulnerability. An authenticated, remote attacker can exploit this to execute arbitrary commands as a root user.
Solution
Apply the patch or upgrade to the version recommended in Cisco bug ID CSCvp19245
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-cmdinj) 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-2019-1936
CVSS V2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C/E:F/RL:OF/RC:C
CVSS Base Score: | 9.0 (High) |
Impact Subscore: | 10.0 |
Exploitability Subscore: | 8.0 |
CVSS Temporal Score: | 7.4 (High) |
CVSS Environmental Score: | NA (None) |
Modified Impact Subscore: | NA |
Overall CVSS Score: | 7.4 (High) |
CVSS Base Score: | 7.2 (High) |
Impact Subscore: | 5.9 |
Exploitability Subscore: | 1.2 |
CVSS Temporal Score: | 6.7 (Medium) |
CVSS Environmental Score: | NA (None) |
Modified Impact Subscore: | NA |
Overall CVSS Score: | 6.7 (Medium) |
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Plugin Source
This is the cisco-sa-20190821-imcs-ucs-cmdinj.nasl nessus plugin source code. This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(129291);
script_version("1.3");
script_cvs_date("Date: 2019/09/26 9:47:30");
script_cve_id("CVE-2019-1936");
script_xref(name:"CISCO-BUG-ID", value:"CSCvp19245");
script_xref(name:"CISCO-SA", value:"cisco-sa-20190821-imcs-ucs-cmdinj");
script_name(english:"Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-cmdinj)");
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 a command execution
vulnerability. An authenticated, remote attacker can exploit this to
execute arbitrary commands as a root user.");
script_set_attribute(attribute:"see_also", value:"https://tools.cisco.com/bugsearch/bug/CSCvp19245");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-imcs-ucs-cmdinj
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c84fa5ca");
script_set_attribute(attribute:"solution", value:
"Apply the patch or upgrade to the version recommended in Cisco bug ID
CSCvp19245");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:H/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-2019-1936");
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:"2019/09/24");
script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:ucs_director");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2019 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': '6.0.0.0', 'fixed_version': '6.7.2.0', 'fixed_display':'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-ucs-cmdinj.nasl
- Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\cisco-sa-20190821-imcs-ucs-cmdinj.nasl
- Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/cisco-sa-20190821-imcs-ucs-cmdinj.nasl
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How to Run
Here is how to run the Cisco UCS Director Authentication Bypass (cisco-sa-20190821-imcs-ucs-cmdinj) 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-cmdinj) plugin ID 129291.
- 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-cmdinj.nasl -t <IP/HOST>
Run the plugin with audit trail message on the console:
/opt/nessus/bin/nasl -a cisco-sa-20190821-imcs-ucs-cmdinj.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-cmdinj.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-cmdinj.nasl -t <IP/HOST>
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References
Cisco Bug ID: Cisco Security Advisory: See also:
- https://www.tenable.com/plugins/nessus/129291
- https://tools.cisco.com/bugsearch/bug/CSCvp19245
- http://www.nessus.org/u?c84fa5ca
- https://vulners.com/nessus/CISCO-SA-20190821-IMCS-UCS-CMDINJ.NASL
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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-ucs-cmdinj.nasl version 1.3. For more plugins, visit the Nessus Plugin Library.
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