CVE-2021-20844 : Exploit Details and Defense Strategies
Learn about CVE-2021-20844 affecting Yamaha Corporation devices like RTX830, NVR510, NVR700W, RTX1210. Find out the impact, affected versions, and mitigation steps.
This CVE-2021-20844 vulnerability impacts multiple Yamaha Corporation devices, allowing a remote attacker to access sensitive information via a crafted web page.
Understanding CVE-2021-20844
This section will delve into the nature of the CVE-2021-20844 vulnerability, its implications, and the affected systems.
What is CVE-2021-20844?
The vulnerability involves improper neutralization of HTTP request headers for scripting syntax in the Web GUI of Yamaha Corporation's RTX830, NVR510, NVR700W, and RTX1210 devices. This flaw can be exploited by a remote authenticated attacker.
The Impact of CVE-2021-20844
The vulnerability enables a remote authenticated attacker to obtain sensitive information through a maliciously crafted web page. This could lead to unauthorized access and potential data breaches.
Technical Details of CVE-2021-20844
In this section, we will explore the specifics of the CVE-2021-20844 vulnerability, including its description, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability arises from inadequate neutralization of HTTP request headers for scripting syntax in the affected devices' Web GUI, granting an attacker the ability to gather sensitive data.
Affected Systems and Versions
Yamaha Corporation's RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier are vulnerable to this exploit.
Exploitation Mechanism
A remote authenticated attacker can exploit this vulnerability by interacting with the affected devices' Web GUI using a specially crafted web page to extract sensitive information.
Mitigation and Prevention
This section will outline the necessary steps to mitigate the risk posed by CVE-2021-20844 and prevent potential security breaches.
Immediate Steps to Take
Users are advised to apply security patches provided by Yamaha Corporation promptly. Additionally, ensure that network access to these devices is restricted to prevent unauthorized exploitation.
Long-Term Security Practices
Implement proper network segmentation and access controls to minimize the exposure of these devices to potential attackers. Regular security assessments and updates are crucial to maintaining a secure environment.
Patching and Updates
Stay informed about security bulletins from Yamaha Corporation and apply patches as soon as they are released to address known vulnerabilities.