CVE-2022-31024 : Exploit Details and Defense Strategies

A user could be tricked into working against a remote Office by sending them a federated share in richdocuments.

Understanding CVE-2022-31024

This CVE affects Nextcloud richdocuments versions prior to 6.0.0, 5.0.4, and 4.2.6, allowing users to be tricked into working against a remote Office through a federated share.

What is CVE-2022-31024?

Federated editing in richdocuments allows iframing remote servers by default, posing a security risk for users working on collaborative documents.

The Impact of CVE-2022-31024

The vulnerability has a CVSS base score of 6.5 (Medium severity) with high integrity impact, requiring user interaction for exploitation and no privileges required.

Technical Details of CVE-2022-31024

Vulnerability Description

The vulnerability in richdocuments versions < 6.0.0 allows attackers to iframe remote servers by default, leading to potential exploitation.

Affected Systems and Versions

Affected Versions: < 4.2.6, >= 5.0.0, < 5.0.4

Exploitation Mechanism

Attackers can trick users into interacting with a remote Office through a federated share, potentially compromising document integrity.

Mitigation and Prevention

Immediate Steps to Take

Users are advised to update Nextcloud richdocuments to versions 6.0.0, 5.0.4, or apply relevant security patches to mitigate the risk.

Long-Term Security Practices

Implement strict origin validation mechanisms and security controls to prevent unauthorized iframing of remote servers.

Patching and Updates

Apply security updates promptly, stay informed about security advisories, and follow best practices for secure collaboration platforms.