CVE-2021-20651 Explained : Impact and Mitigation

A directory traversal vulnerability in ELECOM File Manager allows remote attackers to manipulate files, posing a security risk. Here's what you need to know about CVE-2021-20651.

Understanding CVE-2021-20651

CVE-2021-20651 is a directory traversal vulnerability in ELECOM File Manager, impacting all versions of the application. This vulnerability enables remote attackers to create or overwrite files in accessible directories, potentially escalating their privileges.

What is CVE-2021-20651?

The vulnerability in ELECOM File Manager permits attackers to perform directory traversal, granting them unauthorized access to manipulate files within the application's directories. With this vulnerability, attackers can create new files or overwrite existing ones, exploiting unspecified vectors.

The Impact of CVE-2021-20651

The impact of CVE-2021-20651 is severe as it allows remote attackers to compromise the integrity and confidentiality of data stored within the affected application. By exploiting this vulnerability, attackers can execute arbitrary code, leading to further system compromise.

Technical Details of CVE-2021-20651

Understanding the specific technical aspects of CVE-2021-20651 is crucial for effective mitigation and prevention strategies.

Vulnerability Description

The vulnerability in ELECOM File Manager arises from improper input validation, enabling attackers to navigate through directory structures and interact with files beyond their intended scope. This flaw facilitates unauthorized file manipulation within the application.

Affected Systems and Versions

All versions of ELECOM File Manager are affected by CVE-2021-20651, making it imperative for users to promptly address this vulnerability to safeguard their systems and data.

Exploitation Mechanism

Remote attackers can exploit CVE-2021-20651 by submitting malicious requests to the application, manipulating file paths to access sensitive directories, and perform unauthorized operations within the file system.

Mitigation and Prevention

Taking immediate steps to mitigate the impact of CVE-2021-20651 and implementing robust security practices are essential to protect systems from potential exploitation.

Immediate Steps to Take

Users are advised to update ELECOM File Manager to the latest secure version, apply security patches provided by the vendor, and restrict access to the application to authorized personnel only.

Long-Term Security Practices

Practicing secure coding principles, conducting regular security assessments, and monitoring file system activities can enhance the overall security posture of the application and prevent similar vulnerabilities in the future.

Patching and Updates

Regularly monitoring vendor communications for security updates, promptly applying patches, and maintaining up-to-date software versions are crucial steps in mitigating the risk associated with CVE-2021-20651.