HTTP Request Smuggling Affecting io.netty:netty-all package, versions [,4.1.42.Final)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    2.22% (90th percentile)

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  • Snyk ID SNYK-JAVA-IONETTY-473214
  • published 26 Sep 2019
  • disclosed 26 Sep 2019
  • credit axeBig

How to fix?

Upgrade io.netty:netty-all to version 4.1.42.Final or higher.

Overview

io.netty:netty-all is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.

Affected versions of this package are vulnerable to HTTP Request Smuggling. Netty mishandles whitespace before the colon in HTTP headers such as a Transfer-Encoding : chunked line. This can lead to HTTP request smuggling where an attacker can bypass security controls, gain unauthorized access to sensitive data, and directly compromise other application users.

Note:

io.netty:netty is deprecated. Users should update to io.netty:netty-all

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
6.5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    None
Expand this section

NVD

7.5 high