Detections
Analytics
CVE-2021-21409
medium
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://www.oracle.com/security-alerts/cpuoct2021.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.debian.org/security/2021/dsa-4885
https://security.netapp.com/advisory/ntap-20210604-0003/
https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj
https://github.com/netty/netty/security/advisories/GHSA-f256-j965-7f32
https://github.com/netty/netty/commit/b0fa4d5aab4215f3c22ce6123dd8dd5f38dc0432
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21295
https://www.tenable.com/blog/oracle-april-2022-critical-patch-update-addresses-221-cves
https://www.tenable.com/blog/oracle-october-2021-critical-patch-update-addresses-231-cves