CVE-2019-9509 : Exploit Details and Defense Strategies
Discover the impact of CVE-2019-9509 on Vertiv Avocent UMG-4000 version 4.2.1.19. Learn about the XSS vulnerability, its technical details, and mitigation steps.
The Vertiv Avocent UMG-4000 version 4.2.1.19 web interface is susceptible to a reflected cross-site scripting (XSS) vulnerability due to improper sanitization of HTTP POST parameters.
Understanding CVE-2019-9509
This CVE entry highlights a security flaw in the web interface of the Vertiv Avocent UMG-4000 version 4.2.1.19 that could be exploited by authenticated attackers to execute arbitrary code.
What is CVE-2019-9509?
The vulnerability in the Vertiv Avocent UMG-4000 version 4.2.1.19 allows for a reflected cross-site scripting attack, enabling attackers to manipulate user-controllable input on web pages.
The Impact of CVE-2019-9509
- CVSS Base Score: 6.3 (Medium Severity)
- Attack Vector: Network
- Attack Complexity: Low
- User Interaction: Required
- Confidentiality, Integrity, and Availability Impact: Low
- Privileges Required: None
- Scope: Unchanged
Technical Details of CVE-2019-9509
The following technical details provide insight into the vulnerability and its implications:
Vulnerability Description
The security flaw arises from the lack of proper sanitization of HTTP POST parameters in the Vertiv Avocent UMG-4000 version 4.2.1.19 web interface, leading to a reflected XSS vulnerability.
Affected Systems and Versions
- Affected Product: Avocent UMG-4000
- Vendor: Vertiv
- Affected Version: 4.2.1.19
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating user-controllable input displayed on web pages, potentially executing arbitrary code.
Mitigation and Prevention
To address CVE-2019-9509 and enhance security measures, consider the following steps:
Immediate Steps to Take
- Apply the patches released by Vertiv Avocent for the affected versions.
Long-Term Security Practices
- Regularly update and patch software to prevent vulnerabilities.
- Educate users on safe browsing practices to mitigate XSS risks.
Patching and Updates
- Vertiv Avocent has provided patches for the vulnerability. Trellis customers running specific firmware versions should install the update patch.