CVE-2021-31411 Explained : Impact and Mitigation
Discover CVE-2021-31411 impacting Vaadin versions 14.0.3 through 19.0.4. Learn the impact, technical details, and mitigation steps for this medium-severity vulnerability.
CVE-2021-31411, published on May 4, 2021, addresses insecure temporary directory usage in the frontend build functionality of Vaadin versions 14.0.3 through 19.0.4. This vulnerability allows local users to inject malicious code during application rebuilds.
Understanding CVE-2021-31411
This section delves into the details of the CVE-2021-31411 vulnerability.
What is CVE-2021-31411?
The vulnerability involves insecure temporary directory usage in the frontend build functionality of Vaadin versions 14.0.3 through 19.0.4, exposing the system to malicious code injection by local users.
The Impact of CVE-2021-31411
CVE-2021-31411 has a CVSS base score of 6.3, indicating a medium severity level with high confidentiality and integrity impact. The attack complexity is high, with local access required for exploitation.
Technical Details of CVE-2021-31411
This section covers the technical aspects of CVE-2021-31411.
Vulnerability Description
The vulnerability arises from improper temporary directory usage in Vaadin's frontend build functionality, allowing unauthorized code injection during application rebuilds.
Affected Systems and Versions
Vaadin versions 14.0.3 through 19.0.4 are impacted by this vulnerability, exposing them to potential exploitation by local users.
Exploitation Mechanism
Local users can exploit this vulnerability by injecting malicious code into frontend resources during application rebuilds, leading to unauthorized system access.
Mitigation and Prevention
Here's how you can mitigate the CVE-2021-31411 vulnerability.
Immediate Steps to Take
Users are advised to update Vaadin to secure versions and monitor for any suspicious activities on the system.
Long-Term Security Practices
Practicing secure coding, regularly updating software, and conducting security audits can help prevent similar vulnerabilities in the future.
Patching and Updates
Ensure timely installation of security patches released by Vaadin to address and mitigate the vulnerability effectively.