CVE-2021-21740 : What You Need to Know
Learn about CVE-2021-21740, an information leak vulnerability in ZTE's residential gateway product. Discover its impact, affected systems, and mitigation strategies.
A detailed overview of CVE-2021-21740, an information leak vulnerability in ZTE's residential gateway product.
Understanding CVE-2021-21740
This section provides insights into the nature of the vulnerability and its potential impact.
What is CVE-2021-21740?
The CVE-2021-21740 vulnerability involves an information leak in the digital media player (DMS) of ZTE's residential gateway product. Attackers can exploit this issue by inserting a USB disk with a symbolic link, allowing access to unauthorized directory information and resulting in an information leak.
The Impact of CVE-2021-21740
The impact of this vulnerability could lead to unauthorized access to sensitive directory information, potentially compromising the privacy and security of users' data.
Technical Details of CVE-2021-21740
Explore the technical aspects of the CVE-2021-21740 vulnerability.
Vulnerability Description
The vulnerability allows attackers to leverage a symbolic link in the digital media player of the ZXHN H2640 residential gateway product to gain unauthorized access to directory information.
Affected Systems and Versions
The vulnerability affects ZTE's residential gateway product, specifically version V10.0.0C6_TY of the ZXHN H2640.
Exploitation Mechanism
Attackers can exploit the vulnerability by inserting a USB disk with a symbolic link into the residential gateway, enabling them to access unauthorized directory information.
Mitigation and Prevention
Discover strategies to mitigate the risks posed by CVE-2021-21740.
Immediate Steps to Take
Users should apply security best practices to safeguard their residential gateway products, including monitoring USB device connections and restricting unauthorized access.
Long-Term Security Practices
Implementing network segmentation, regularly updating firmware, and conducting security assessments can enhance the overall security posture of residential gateway products.
Patching and Updates
Stay informed about security updates and patches released by ZTE for the affected residential gateway product to address the CVE-2021-21740 vulnerability.