Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is a vulnerability that enables request smuggling. The content-length header is not correctly validated if the request only uses a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. This is a followup of GHSA-wm47-8v5p-wjpj/CVE-2021-21295 which did miss to fix this one case. This was fixed as part of 4.1.61.Final.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| io.netty:netty-codec-http2(Maven) | 4.0.0 | 4.1.61.Final | N/A |
| org.jboss.netty:netty(Maven) | 0 | N/A | N/A |
| io.netty:netty(Maven) | 0 | N/A | N/A |
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