Description
A request smuggling vulnerability existed in the Google Cloud Classic Application Load Balancer due to improper handling of chunked-encoded HTTP requests. This allowed attackers to craft requests that could be misinterpreted by backend servers. The issue was fixed by disallowing stray data after a chunk, and is no longer exploitable. No action is required as Classic Application Load Balancer service after 2025-04-26 is not vulnerable.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Google Cloud | Classic Application Load Balancer | — | — |
Advisories 1
- WID-SEC-2025-1081 Google Cloud Platform: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · May 18, 2025