CVE-2022-29776 Explained : Impact and Mitigation

Onlyoffice Document Server v6.0.0 and below and Core 6.1.0.26 and below were discovered to contain a stack overflow vulnerability via the component DesktopEditor/common/File.cpp.

Understanding CVE-2022-29776

This CVE involves a stack overflow vulnerability in Onlyoffice Document Server and Core versions that can be exploited by attackers.

What is CVE-2022-29776?

The CVE-2022-29776 vulnerability affects Onlyoffice Document Server v6.0.0 and earlier, as well as Core 6.1.0.26 and earlier. The issue arises from a stack overflow in the component File.cpp, which could be exploited by malicious actors.

The Impact of CVE-2022-29776

The presence of this vulnerability could allow threat actors to execute arbitrary code or cause a denial of service (DoS) condition by crashing the application, posing a significant risk to the confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2022-29776

This section provides a detailed overview of the vulnerability.

Vulnerability Description

The vulnerability in Onlyoffice Document Server and Core versions stems from a stack overflow in the DesktopEditor component's File.cpp file, which attackers can leverage to compromise the system.

Affected Systems and Versions

The affected systems include Onlyoffice Document Server versions 6.0.0 and earlier, as well as Core 6.1.0.26 and earlier.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input to trigger a stack overflow, potentially leading to the execution of arbitrary code.

Mitigation and Prevention

Understanding how to mitigate and prevent the exploitation of CVE-2022-29776 is crucial for safeguarding systems.

Immediate Steps to Take

It is recommended to apply the latest security patches and updates provided by Onlyoffice to address the vulnerability.
Implement network security measures to prevent unauthorized access to vulnerable systems.

Long-Term Security Practices

Regularly monitor for security advisories and updates from Onlyoffice to stay informed about emerging threats and vulnerabilities.
Conduct regular security assessments and penetration testing to identify and remediate weaknesses in the environment.

Patching and Updates

Ensure that all systems running Onlyoffice Document Server and Core are promptly patched with the latest updates to mitigate the risk posed by CVE-2022-29776.