Description
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUATION` frames. The server's lack of a limit on the number of `CONTINUATION` frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive. Versions 4.1.132.Final and 4.2.10.Final fix the issue.
Problem types
CWE-770: Allocation of Resources Without Limits or Throttling
Product status
>= 4.2.0.Alpha1, < 4.2.10.Final
References
github.com/.../netty/security/advisories/GHSA-w9fj-cfpg-grvv