Description

Netty is an asynchronous event-driven network application framework for development of maintainable high performance protocol servers and clients. In versions 4.1.124.Final, and 4.2.0.Alpha3 through 4.2.4.Final, Netty incorrectly accepts standalone newline characters (LF) as a chunk-size line terminator, regardless of a preceding carriage return (CR), instead of requiring CRLF per HTTP/1.1 standards. When combined with reverse proxies that parse LF differently (treating it as part of the chunk extension), attackers can craft requests that the proxy sees as one request but Netty processes as two, enabling request smuggling attacks. This is fixed in versions 4.1.125.Final and 4.2.5.Final.

INFO

Published Date :

2025-09-03T20:56:50.732Z

Last Modified :

2025-09-05T18:41:21.428Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-58056 vulnerability.

Vendors Products
Netty
  • Netty

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
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VS Confidentiality
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SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact