CVE-2020-13432 : Vulnerability Insights and Analysis

Rejetto HFS (aka HTTP File Server) v2.3m Build #300, when virtual files or folders are used, allows remote attackers to trigger an invalid-pointer write access violation via concurrent HTTP requests with a long URI or long HTTP headers.

Understanding CVE-2020-13432

This CVE entry describes a vulnerability in Rejetto HFS that could be exploited by remote attackers.

What is CVE-2020-13432?

CVE-2020-13432 is a security vulnerability in Rejetto HFS (HTTP File Server) v2.3m Build #300 that enables attackers to execute an invalid-pointer write access violation through specific HTTP requests.

The Impact of CVE-2020-13432

The vulnerability allows remote attackers to exploit the server by sending concurrent HTTP requests with lengthy URIs or HTTP headers, leading to a potential denial of service (DoS) attack or unauthorized access.

Technical Details of CVE-2020-13432

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability in Rejetto HFS v2.3m Build #300 arises when virtual files or folders are utilized, enabling attackers to trigger an invalid-pointer write access violation.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

Attackers can exploit this vulnerability by sending multiple HTTP requests with extended URIs or HTTP headers, causing the server to encounter an invalid-pointer write access violation.

Mitigation and Prevention

Protecting systems from CVE-2020-13432 requires immediate actions and long-term security measures.

Immediate Steps to Take

Disable virtual files and folders in Rejetto HFS to mitigate the vulnerability.
Implement network-level controls to limit access to the server.
Monitor and analyze HTTP traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch Rejetto HFS to address security vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential weaknesses.

Patching and Updates

Apply patches and updates provided by Rejetto to fix the vulnerability in HFS.