Detections
Analytics
SCA: security update for io.netty:netty-codec-http2 (GHSA-f256-j965-7f32)
medium Tenable Cloud Security Plugin ID 414192
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- 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. (CVE-2021-21409)
See Also
Plugin Details
Severity: Medium
ID: 414192
Version: Revision 1.5
Type: Local
Family: SCA Checks
Published: 1/23/2025
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.18
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2021-21409
CVSS v3
Risk Factor: Medium
Base Score: 5.9
Temporal Score: 5.2
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Exploit Ease: No known exploits are available
Patch Publication Date: 3/30/2021
Vulnerability Publication Date: 3/30/2021
Reference Information
CVE: CVE-2021-21409
cwe: CWE-444