DEBIAN-CVE-2021-21409
- Source
- https://security-tracker.debian.org/tracker/CVE-2021-21409
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-21409.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-21409
- Upstream
- Published
- 2021-03-30T15:15:14Z
- Modified
- 2025-09-25T22:40:27Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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
Affected packages
Debian:11 / netty
Package
- Name
- netty
- Purl
- pkg:deb/debian/netty?arch=source
Debian:12 / netty
Package
- Name
- netty
- Purl
- pkg:deb/debian/netty?arch=source
Debian:13 / netty
Package
- Name
- netty
- Purl
- pkg:deb/debian/netty?arch=source
Debian:14 / netty
Package
- Name
- netty
- Purl
- pkg:deb/debian/netty?arch=source