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CVE-2020-8235 : What You Need to Know

Learn about CVE-2020-8235 affecting Nextcloud Deck app version 1.0.4, allowing attackers to view all attachments. Find mitigation steps and update to version 1.0.5 for protection.

Nextcloud Deck app version 1.0.4 is affected by an insecure direct object reference vulnerability that allows attackers to view all attachments.

Understanding CVE-2020-8235

This CVE involves a security issue in the Nextcloud Deck app version 1.0.4.

What is CVE-2020-8235?

The vulnerability in Nextcloud Deck 1.0.4 allows unauthorized access to attachments due to missing access control.

The Impact of CVE-2020-8235

The vulnerability enables attackers to view all attachments, potentially exposing sensitive information.

Technical Details of CVE-2020-8235

The technical aspects of the CVE.

Vulnerability Description

        Type: Insecure Direct Object Reference (IDOR) (CWE-639)
        Description: Missing access control in Nextcloud Deck 1.0.4 allows attackers to view all attachments.

Affected Systems and Versions

        Product: Nextcloud Deck app
        Version: 1.0.4
        Fixed Version: 1.0.5

Exploitation Mechanism

The vulnerability can be exploited by attackers to directly reference and access attachments without proper authorization.

Mitigation and Prevention

Protecting systems from CVE-2020-8235.

Immediate Steps to Take

        Update Nextcloud Deck app to version 1.0.5 to mitigate the vulnerability.
        Monitor and restrict access to sensitive attachments.

Long-Term Security Practices

        Implement proper access controls and authorization mechanisms.
        Regularly audit and review access permissions to prevent unauthorized viewing of attachments.

Patching and Updates

        Stay informed about security advisories and promptly apply patches and updates to address known vulnerabilities.

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