CVE-2019-1937: Cisco Integrated Management Controller Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data Authentication Bypass Vulnerability
First published: Wed Aug 21 2019(Updated: )
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 unauthenticated, remote attacker to acquire a valid session token with administrator privileges, bypassing user authentication. The vulnerability is due to insufficient request header validation during the authentication process. An attacker could exploit this vulnerability by sending a series of malicious requests to an affected device. An exploit could allow the attacker to use the acquired session token to gain full administrator access to the affected device.
Credit: Fatih Sencer ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Integrated Management Controller Supervisor | >=2.2.0.3<=2.2.0.6 | |
| Cisco UCS Director | >=6.6.0.0<=6.6.1.0 | |
| Cisco UCS Director | >=6.7.0.0<=6.7.1.0 | |
| Cisco UCS Director | =6.7\(0.0.67265\) | |
| Cisco UCS Director Express for Big Data | >=3.7.0.0<=3.7.1.0 | |
| Cisco UCS Director Express for Big Data | =3.6.0.0 |
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Reference Links
- https://www.exploit-db.com/exploits/51589
- 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://packetstormsecurity.com/files/173531/Cisco-UCS-IMC-Supervisor-2.2.0.0-Authentication-Bypass.html
- http://seclists.org/fulldisclosure/2019/Aug/36
- https://seclists.org/bugtraq/2019/Aug/49
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-imcs-ucs-authby
Frequently Asked Questions
What is CVE-2019-1937?
CVE-2019-1937 is 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.
What is the severity of CVE-2019-1937?
CVE-2019-1937 has a severity rating of 9.8 (Critical).
How does CVE-2019-1937 impact Cisco Integrated Management Controller Supervisor?
CVE-2019-1937 allows an unauthenticated, remote attacker to acquire a valid session token with administrator privileges in Cisco Integrated Management Controller Supervisor.
How does CVE-2019-1937 impact Cisco UCS Director?
CVE-2019-1937 allows an unauthenticated, remote attacker to acquire a valid session token with administrator privileges in Cisco UCS Director.
How do I fix CVE-2019-1937?
To fix CVE-2019-1937, Cisco recommends updating to the appropriate fixed version mentioned in the Cisco Security Advisory.
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