HTTP Request Smuggling Affecting kudu package, versions [,1.16.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
4.94% (91st percentile)

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  • Snyk IDSNYK-UNMANAGED-KUDU-2382486
  • published26 Jan 2022
  • disclosed30 Mar 2021
  • creditUnknown

Introduced: 30 Mar 2021

CVE-2021-21409  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

Upgrade kudu to version 1.16.0 or higher.

Overview

Affected versions of this package are vulnerable to HTTP Request Smuggling. 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.

CVSS Base Scores

version 3.1