HTTP Request Smuggling Affecting io.netty:netty-codec-http package, versions [,4.1.44.Final)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.18% (56th percentile)

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  • Snyk ID SNYK-JAVA-IONETTY-6056419
  • published 27 Jan 2020
  • disclosed 27 Jan 2020
  • credit Unknown

How to fix?

Upgrade io.netty:netty-codec-http to version 4.1.44.Final or higher.

Overview

io.netty:netty-codec-http is a network application framework for rapid development of maintainable high performance protocol servers & clients.

Affected versions of this package are vulnerable to HTTP Request Smuggling due to the package mishandling Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header when using HTTP/1.1. This issue exists because of an incomplete fix for CVE-2019-16869.

NOTE: This vulnerability has also been identified as: CVE-2020-7238

CVSS Scores

version 3.1
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Snyk

Recommended
7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    None
  • Availability (A)
    None
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NVD

9.1 critical
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Red Hat

7.5 high