CVE-2021-43797

 

Published at: - 09-12-2021 08:15

Last modified: - 12-01-2023 05:15

Total changes: - 14

Description

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the beginning / end of the header name. It should instead fail fast as these are not allowed by the spec and could lead to HTTP request smuggling. Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore, and therefore does not do the validation itself. Users should upgrade to version 4.1.71.Final.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

 

Verification logic

 

Reference

• https://github.com/netty/netty/security/advisories/GHSA-wx5j-54mm-rqqq
• https://github.com/netty/netty/commit/07aa6b5938a8b6ed7a6586e066400e2643897323
• https://security.netapp.com/advisory/ntap-20220107-0003/
• https://www.oracle.com/security-alerts/cpuapr2022.html
• N/A-
• [debian-lts-announce] 20230111 [SECURITY] [DLA 3268-1] netty security update-
• DSA-5316-

 

Keywords

NVD

 

CVE-2021-43797

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures