HTTP Request Smuggling Affecting io.netty:netty-codec-http2 Open this link in a new tab package, versions [,4.1.60.Final)
Exploit Maturity
Mature
Attack Complexity
High
Integrity
High
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications-
snyk-id
SNYK-JAVA-IONETTY-1083991
-
published
10 Mar 2021
-
disclosed
10 Mar 2021
-
credit
Unknown
Introduced: 10 Mar 2021
CVE-2021-21295 Open this link in a new tabHow to fix?
Upgrade io.netty:netty-codec-http2
to version 4.1.60.Final or higher.
Overview
io.netty:netty-codec-http2 is a HTTP2 sub package for the netty library, an event-driven asynchronous network application framework.
Affected versions of this package are vulnerable to HTTP Request Smuggling. If a Content-Length header is present in the original HTTP/2 request, the field is not validated by Http2MultiplexHandler
as it is propagated up.
An additional case of this vulnerability was fixed in 4.1.61.Final (CVE-2021-21409).