CVE-2020-24113 : Security Advisory and Response
Learn about CVE-2020-24113, a Directory Traversal vulnerability in Yealink W60B version 77.83.0.85, enabling attackers to access sensitive information and cause a denial of service (DoS) attack.
CVE-2020-24113 is a Directory Traversal vulnerability in the Contacts File Upload Interface in Yealink W60B version 77.83.0.85. This vulnerability allows attackers to gain sensitive information and cause a denial of service (DoS).
Understanding CVE-2020-24113
This section provides insights into the nature and impact of the CVE-2020-24113 vulnerability.
What is CVE-2020-24113?
CVE-2020-24113 is a security flaw in Yealink W60B version 77.83.0.85 that enables malicious actors to exploit a Directory Traversal vulnerability in the Contacts File Upload Interface.
The Impact of CVE-2020-24113
The vulnerability can result in unauthorized access to sensitive information and lead to a denial of service (DoS) attack, compromising the confidentiality and availability of the system.
Technical Details of CVE-2020-24113
This section delves into the technical aspects of the CVE-2020-24113 vulnerability.
Vulnerability Description
The vulnerability arises from inadequate input validation in the Contacts File Upload Interface, allowing attackers to navigate directories and access restricted files.
Affected Systems and Versions
- Vendor: Yealink
- Product: W60B
- Affected Version: 77.83.0.85
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating file upload requests to traverse directories and access unauthorized files.
Mitigation and Prevention
Learn how to protect your systems from CVE-2020-24113.
Immediate Steps to Take
- Disable the Contacts File Upload Interface if not essential for operations.
- Implement strict input validation to prevent directory traversal attacks.
- Monitor system logs for any suspicious file access attempts.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing to identify vulnerabilities.
- Educate users on safe file handling practices to mitigate risks of directory traversal attacks.
Patching and Updates
- Apply patches or updates provided by Yealink to address the vulnerability and enhance system security.