CVE-2023-6976 Explained : Impact and Mitigation

This CVE involves the vulnerability "Unrestricted Upload of File with Dangerous Type" which enables the writing of arbitrary files into arbitrary locations on the remote filesystem within the server process context.

Understanding CVE-2023-6976

This section provides insight into the nature and impact of CVE-2023-6976.

What is CVE-2023-6976?

CVE-2023-6976 allows malicious actors to upload files of dangerous types to remote locations on the server's filesystem, potentially compromising the confidentiality, integrity, and availability of the system.

The Impact of CVE-2023-6976

The impact of this vulnerability is rated as high, with a CVSSv3 base score of 8.8. It poses a significant threat to system security due to its potential to manipulate files and directories on the server.

Technical Details of CVE-2023-6976

Delving into the technical aspects of CVE-2023-6976, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The main issue lies in the ability of the vulnerability to allow the uploading of arbitrary files with dangerous types to unauthorized locations on the server, leading to potential security breaches.

Affected Systems and Versions

The vulnerability impacts the "mlflow/mlflow" product by "mlflow" with versions less than 2.9.2. Systems running affected versions are at risk of exploitation.

Exploitation Mechanism

The exploitation involves leveraging the flaw to upload malicious files with dangerous types to the server, granting unauthorized access and control over the system's files and directories.

Mitigation and Prevention

Addressing the CVE-2023-6976 vulnerability requires immediate action to mitigate risks and prevent unauthorized access to the system.

Immediate Steps to Take

Update the affected systems to version 2.9.2 or higher to eliminate the vulnerability.
Restrict file upload capabilities to only allow authorized file types and directories.
Implement proper file validation mechanisms to prevent the upload of dangerous files.

Long-Term Security Practices

Regularly monitor and audit file upload activities on the server to detect any suspicious behavior.
Educate users on secure file uploading practices to prevent malicious uploads.
Employ robust access control measures to restrict unauthorized access to critical system files.

Patching and Updates

Ensure timely application of security patches and updates provided by the vendor to address known vulnerabilities and enhance system security posture.