CVE-2021-40864 : Exploit Details and Defense Strategies

This CVE-2021-40864 article provides details about a vulnerability in the Translate plugin for ONLYOFFICE Document Server.

Understanding CVE-2021-40864

CVE-2021-40864 is a vulnerability in versions 6.1.x through 6.3.x (before 6.3.0.72) of the Translate plugin for ONLYOFFICE Document Server. The issue involves a lack of escape calls for specific fields.

What is CVE-2021-40864?

The Translate plugin for ONLYOFFICE Document Server, in versions 6.1.x through 6.3.x before 6.3.0.72, fails to include escape calls for the msg.data and text fields, leading to a security vulnerability.

The Impact of CVE-2021-40864

This vulnerability could be exploited by a remote attacker to execute malicious code or perform other unauthorized actions on the affected system.

Technical Details of CVE-2021-40864

This section delves into the technical aspects of the CVE.

Vulnerability Description

The Translate plugin for ONLYOFFICE Document Server, versions 6.1.x through 6.3.x before 6.3.0.72, lacks necessary escape calls for the msg.data and text fields, which may result in security risks.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Vulnerable Versions: 6.1.x through 6.3.x (before 6.3.0.72)

Exploitation Mechanism

The vulnerability can be exploited by injecting malicious code into the affected fields, potentially leading to unauthorized system access.

Mitigation and Prevention

Protective measures to safeguard systems against this vulnerability.

Immediate Steps to Take

Upgrade ONLYOFFICE Document Server to version 6.3.0.72 or higher.
Implement input validation mechanisms for user-generated content.

Long-Term Security Practices

Regularly update and patch software to ensure the latest security fixes.
Conduct security audits and code reviews to identify and address vulnerabilities in a timely manner.

Patching and Updates

Ensure prompt application of security patches and updates to mitigate the risk of exploitation.