CVE-2021-41831 Explained : Impact and Mitigation

Apache OpenOffice is prone to a vulnerability that allows attackers to manipulate the timestamp of signed documents, affecting versions up to 4.1.10. This CVE focuses on the improper verification of cryptographic signatures.

Understanding CVE-2021-41831

This CVE involves the manipulation of timestamps in signed documents within Apache OpenOffice, potentially leading to security risks.

What is CVE-2021-41831?

CVE-2021-41831 allows malicious actors to tamper with the timestamp of signed documents in Apache OpenOffice, impacting versions up to 4.1.10. This vulnerability falls under CWE-347: Improper Verification of Cryptographic Signature.

The Impact of CVE-2021-41831

The vulnerability poses a moderate risk level, enabling attackers to exploit the timestamp manipulation with signature wrapping, potentially leading to security breaches.

Technical Details of CVE-2021-41831

This section delves deeper into the technical aspects of the CVE.

Vulnerability Description

The flaw in Apache OpenOffice permits attackers to maliciously alter the timestamp of signed documents, compromising the integrity of the files.

Affected Systems and Versions

Apache OpenOffice versions up to 4.1.10 are vulnerable
OpenOffice.org versions up to 3.4 are also affected

Exploitation Mechanism

The vulnerability allows threat actors to manipulate timestamps, potentially leading to unauthorized access or data tampering.

Mitigation and Prevention

To safeguard systems against CVE-2021-41831, immediate actions and long-term security practices are essential.

Immediate Steps to Take

Update Apache OpenOffice to version 4.1.11
Regularly verify the signatures of documents to detect tampering

Long-Term Security Practices

Implement robust cryptographic signature verification processes
Educate users on verifying document authenticity to prevent exploitation

Patching and Updates

Stay informed about security patches and updates released by Apache OpenOffice to address vulnerabilities promptly.