high8.8
CVE-2020-35217
Vert.x-Web framework v4.0 milestone 1-4 does not perform a correct CSRF verification.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Eclipse | Vert.X-Web | Version 4.0.0 |