CVE-2021-21409

Description

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.

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21295

https://github.com/netty/netty/commit/b0fa4d5aab4215f3c22ce6123dd8dd5f38dc0432

https://github.com/netty/netty/security/advisories/GHSA-f256-j965-7f32

https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj

https://lists.apache.org/thread.html/r0b09f3e31e004fe583f677f7afa46bd30110904576c13c5ac818ac2c%40%3Cissues.flink.apache.org%3E

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https://security.netapp.com/advisory/ntap-20210604-0003/

https://www.debian.org/security/2021/dsa-4885

https://www.oracle.com/security-alerts/cpuapr2022.html

https://www.oracle.com/security-alerts/cpujan2022.html

https://www.oracle.com//security-alerts/cpujul2021.html

https://www.oracle.com/security-alerts/cpuoct2021.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3