CVE-2021-43446 Explained : Impact and Mitigation

CVE-2021-43446 relates to a Cross Site Scripting (XSS) vulnerability in ONLYOFFICE affecting all versions as of 2021-11-08.

Understanding CVE-2021-43446

What is CVE-2021-43446?

CVE-2021-43446 involves a security issue in ONLYOFFICE's document editor, allowing malicious XSS payloads via the 'macros' feature.

The Impact of CVE-2021-43446

The vulnerability can lead to the execution of arbitrary scripts on the victim's browser, potentially compromising sensitive data.

Technical Details of CVE-2021-43446

Vulnerability Description

The flaw in ONLYOFFICE's 'macros' feature enables attackers to inject and execute malicious scripts through crafted payloads.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Affected Versions: all versions as of 2021-11-08

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting specially crafted XSS payloads via the 'macros' functionality in ONLYOFFICE.

Mitigation and Prevention

Immediate Steps to Take

Disable or restrict the use of the 'macros' feature in ONLYOFFICE.
Regularly update ONLYOFFICE to the latest version to patch security vulnerabilities.

Long-Term Security Practices

Educate users on safe browsing habits and the risks of executing macros from untrusted sources.

Patching and Updates

Ensure timely installation of security patches and updates provided by ONLYOFFICE to address known vulnerabilities.