CVE-2020-5230 : What You Need to Know

Opencast before 8.1 and 7.6 allows almost arbitrary identifiers for media packages and elements to be used. This can lead to security vulnerabilities and operational issues. The vulnerability is rated with a CVSS base score of 7.7.

Understanding CVE-2020-5230

Opencast's improper handling of identifiers can result in security risks and operational challenges.

What is CVE-2020-5230?

Opencast versions prior to 8.1 and 7.6 permit the use of arbitrary identifiers for media packages and elements, potentially enabling attackers to escape working directories and write files to unauthorized locations. The issue is resolved in Opencast 7.6 and 8.1.

The Impact of CVE-2020-5230

The vulnerability has a high severity rating due to its potential to compromise confidentiality, integrity, and availability. Attackers with low privileges can exploit this issue over a network with user interaction required.

Technical Details of CVE-2020-5230

Opencast's vulnerability details and affected systems.

Vulnerability Description

Opencast's unsafe identifier usage can lead to directory traversal and unauthorized file writing, posing security risks.

Affected Systems and Versions

Product: Opencast
Vendor: Opencast
Versions Affected: < 7.6, >= 8.0, < 8.1

Exploitation Mechanism

The vulnerability allows attackers to manipulate identifiers, potentially escaping directories and writing files to unauthorized locations.

Mitigation and Prevention

Steps to address and prevent CVE-2020-5230.

Immediate Steps to Take

Update Opencast to version 7.6 or 8.1 to mitigate the vulnerability.
Monitor for any unauthorized file operations or directory traversal attempts.

Long-Term Security Practices

Implement secure coding practices to validate and sanitize user input.
Regularly review and update security configurations to prevent similar vulnerabilities.

Patching and Updates

Apply patches provided by Opencast to address the identifier vulnerability and enhance system security.