CVE-2020-35217: CSRF
Vert.x-Web framework v4.0 milestone 1-4 does not perform a correct CSRF verification. Instead of comparing the CSRF token in the request with the CSRF token in the cookie, it compares the CSRF token in the cookie against a CSRF token that is stored in the session. An attacker does not even need to provide a CSRF token in the request because the framework does not consider it. The cookies are automatically sent by the browser and the verification will always succeed, leading to a successful CSRF attack.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID is CVE-2020-35217.
What is the severity of CVE-2020-35217?
The severity of CVE-2020-35217 is high.
What is the affected software for CVE-2020-35217?
The affected software for CVE-2020-35217 is Eclipse Vert.x-web version 4.0.0 milestone 1-4.
How does this vulnerability work?
This vulnerability allows an attacker to bypass CSRF verification by comparing the CSRF token in the cookie against a CSRF token that is stored in the session.
Is there a fix available for CVE-2020-35217?
Yes, a fix has been implemented. Please refer to the provided reference for more information.