8.8
CWE
352
Advisory Published
Updated

CVE-2020-35217: CSRF

First published: Wed Jan 20 2021(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Eclipse Vert.x-Web=4.0.0-milestone1
Eclipse Vert.x-Web=4.0.0-milestone2
Eclipse Vert.x-Web=4.0.0-milestone3
Eclipse Vert.x-Web=4.0.0-milestone4

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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.

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