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Allocation of Resources Without Limits or Throttling in io.netty:netty-all

CVE-2025-55163

  • io.netty:netty-all
  • io.netty:netty-codec-http2
  • io.netty:netty5-codec-http2
High
8.2/10

Summary

Netty is an asynchronous, event-driven network application framework. Netty is vulnerable to the "MadeYouReset" DDoS attack. This is a logical vulnerability in the HTTP/2 protocol that exploits malformed HTTP/2 control frames to bypass the "max concurrent streams" limit, resulting in resource exhaustion and a distributed Denial-of-Service (DDoS) condition. This issue affects io.netty:netty-codec-http2 versions through 4.1.123.Final, 4.2.0.Alpha1 through 4.2.3.Final, and 5.0.0.Alpha1 through 5.0.0.Alpha5.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-770 - Allocation of Resources Without Limits or Throttling

The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References

Advisory Timeline

  • Published