GHSA-3h5r-928v-mxhh Unauthorized client-side property update in UIDL request handler in Vaadin 10 and 11
An attacker can modify client-side element properties in Vaadin applications due to missing authorization checks in the UIDL request handler.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-3h5r-928v-mxhh?
GHSA-3h5r-928v-mxhh is a missing authorization vulnerability in com.vaadin:vaadin-bom, published on 19 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Missing check in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.5 (Vaadin 10.0.0 through 10.0.7, and 11.0.0 through 11.0.2) allows attacker to update element property values via crafted synchronization message.
Which versions are affected by GHSA-3h5r-928v-mxhh?
4 open source packages ship an affected version, including com.vaadin:vaadin-bom.
| Package | Affected | Fixed in |
|---|---|---|
com.vaadin:vaadin-bom Maven | From 10.0.0 | 10.0.8 |
com.vaadin:vaadin-bom Maven | From 10.0.0 | 10.0.8 |
com.vaadin:vaadin-bom Maven | From 11.0.0 | 11.0.3 |
com.vaadin:vaadin-bom Maven | From 11.0.0 | 11.0.3 |
How do I fix GHSA-3h5r-928v-mxhh?
Upgrade com.vaadin:vaadin-bom to a fixed version for your release line: 10.0.8 or 11.0.3.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is GHSA-3h5r-928v-mxhh being exploited?
There is no known exploitation of GHSA-3h5r-928v-mxhh in the wild and no public exploit code.