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Vulnerability Details : CVE-2019-1936

A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data could allow an authenticated, remote attacker to execute arbitrary commands on the underlying Linux shell as the root user. Exploitation of this vulnerability requires privileged access to an affected device. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit this vulnerability by logging in to the web-based management interface with administrator privileges and then sending a malicious request to a certain part of the interface.
Publish Date : 2019-08-21 Last Update Date : 2019-08-30
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- CVSS Scores & Vulnerability Types

CVSS Score
9.0
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Single system (The vulnerability requires an attacker to be logged into the system (such as at a command line or via a desktop session or web interface).)
Gained Access None
Vulnerability Type(s) Execute Code
CWE ID 20

- Products Affected By CVE-2019-1936

# Product Type Vendor Product Version Update Edition Language
1 Application Cisco Integrated Management Controller Supervisor 2.1.0.0 Version Details Vulnerabilities
2 Application Cisco Ucs Director 6.0.0.0 Version Details Vulnerabilities
3 Application Cisco Ucs Director 6.5.0.0 Version Details Vulnerabilities
4 Application Cisco Ucs Director 6.6.0.0 Version Details Vulnerabilities
5 Application Cisco Ucs Director 6.6.1.0 Version Details Vulnerabilities
6 Application Cisco Ucs Director 6.7.0.0 Version Details Vulnerabilities
7 Application Cisco Ucs Director 6.7(0.0.67265) Version Details Vulnerabilities
8 Application Cisco Ucs Director 6.7.1.0 Version Details Vulnerabilities
9 Application Cisco Ucs Director Express For Big Data 3.0.0.0 Version Details Vulnerabilities
10 Application Cisco Ucs Director Express For Big Data 3.5.0.0 Version Details Vulnerabilities
11 Application Cisco Ucs Director Express For Big Data 3.6.0.0 Version Details Vulnerabilities
12 Application Cisco Ucs Director Express For Big Data 3.7.0.0 Version Details Vulnerabilities
13 Application Cisco Ucs Director Express For Big Data 3.7.1.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Cisco Integrated Management Controller Supervisor 1
Cisco Ucs Director 7
Cisco Ucs Director Express For Big Data 5

- References For CVE-2019-1936

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-imcs-ucs-cmdinj
CISCO 20190821 Cisco Integrated Management Controller Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data Command Injection Vulnerability
http://packetstormsecurity.com/files/154239/Cisco-UCS-IMC-Supervisor-Authentication-Bypass-Command-Injection.html
http://packetstormsecurity.com/files/154308/Cisco-UCS-Director-Unauthenticated-Remote-Code-Execution.html
http://seclists.org/fulldisclosure/2019/Aug/36
FULLDISC 20190830 Multiple vulns in Cisco UCS Director: from unauth remote access to code execution as root
https://seclists.org/bugtraq/2019/Aug/49
BUGTRAQ 20190828 Multiple vulns in Cisco UCS Director: from unauth remote access to code execution as root

- Metasploit Modules Related To CVE-2019-1936

Cisco UCS Director Unauthenticated Remote Code Execution
The Cisco UCS Director virtual appliance contains two flaws that can be combined and abused by an attacker to achieve remote code execution as root. The first one, CVE-2019-1937, is an authentication bypass, that allows the attacker to authenticate as an administrator. The second one, CVE-2019-1936, is a command injection in a password change form, that allows the attacker to inject commands that will execute as root. This module combines both vulnerabilities to achieve the unauthenticated command injection as root. It has been tested with Cisco UCS Director virtual machines 6.6.0 and 6.7.0. Note that Cisco also mentions in their advisory that their IMC Supervisor and UCS Director Express are also affected by these vulnerabilities, but this module was not tested with those products.
Module type : exploit Rank : excellent Platforms : Unix


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