medium4.0
CVE-2021-31406
Timing side channel vulnerability in endpoint request handler in Vaadin 15-19
Impact
Non-constant-time comparison of CSRF tokens in endpoint request handler in `com.vaadin:flow-server` versions 3.0.0 through 5.0.3 (Vaadin 15.0.0 through 18.0.6), and com.vaadin:fusion-endpoint version 6.0.0 (Vaadin 19.0.0) allows attacker to guess a security token for Fusion endpoints via timing attack. - https://vaadin.com/security/cve-2021-31406
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | com.vaadin:flow-server | >= 3.0.0, < 5.0.4 | 5.0.4 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Vaadin | Flow | from 3.0.0 before 5.0.4 Version 6.0.0 |
| Vaadin | Vaadin | from 15.0.0 before 18.0.7 Version 19.0.0 |