CVE-2021-43797

Vulnerable Component Details
Type Namespace Name Version Package URL
maven io.netty netty-codec-http 4.1.68.Final pkg:maven/io.netty/netty-codec-http@4.1.68.Final?type=jar
Vulnerability Details
ID CVE-2021-43797
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.
Recommendation . || State: fixed | Fix Versions: 4.1.71.Final. || Upgrade to version 4.1.71.Final or above.
Ratings
Severity Score Method Vector Source
6.5 CVSSv31 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N ghsa
4.3 CVSSv2 AV:N/AC:M/Au:N/C:N/I:P/A:N nvd
6.5 CVSSv31 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N nvd
6.5 CVSSv31 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N redhat
None None ubuntu
Related Vulnerabilities
Found By Gitlab Gemnasium , Anchore Grype , Sonotype OSS-Index , Aquasec Trivy
References / Advisories
Weakness Enumeration