Affected: CleanStart: apache-hive, CleanStart: incubator-kie-kogito-data-index-ephemeral, CleanStart: kogito-apps, CleanStart: stargate, CleanStart: strimzi-kafka-operator, CleanStart: wavefront-proxy

CVE-2025-58056 affects multiple packages. This issue is resolved in later releases. See references for individual vulnerability details.

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.

Affected: Maven: io.netty:netty-codec-http

## Summary A flaw in netty's parsing of chunk extensions in HTTP/1.1 messages with chunked encoding can lead to request smuggling issues with some reverse proxies.

## Details When encountering a newline character (LF) while parsing a chunk extension, netty interprets the newline as the end of the chunk-size line regardless of whether a preceding carriage return (CR) was found. This is in violation of the HTTP 1.1 standard which specifies that the chunk extension is terminated by a CRLF sequence (see the [RFC](https://datatracker.ietf.org/doc/html/rfc9112#name-chunked-transfer-coding)).

This is by itself harmless, but consider an intermediary with a similar parsing flaw: while parsing a chunk extension, the intermediary interprets an LF without a preceding CR as simply part of the chunk extension (this is also in violation of the RFC, because whitespace characters are not allowed in chunk extensions). We can use this discrepancy to construct an HTTP request that the intermediary will interpret as one request but netty will interpret as two (all lines ending with CRLF, notice the LFs in the chunk extension):

``` POST /one HTTP/1.1 Host: localhost:8080 Transfer-Encoding: chunked

48;\nAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n0

POST /two HTTP/1.1 Host: localhost:8080 Transfer-Encoding: chunked

0

```

The intermediary will interpret this as a single request. Once forwarded to netty, netty will interpret it as two separate requests. This is a…

Hitachi Infrastructure Analytics Advisor contains the following vulnerability: CVE-2025-48924 Hitachi Ops Center Analyzer contains the following vulnerabilities: CVE-2025-48924 Hitachi Ops Center Analyzer viewpoint contains the following vulnerability: CVE-2025-48924 Hitachi Ops Center Viewpoint contains the following vulnerabilities: CVE-2023-35116, CVE-2025-24970, CVE-2025-25193, CVE-2025-48924, CVE-2025-55163, CVE-2025-58056, CVE-2025-58057

netty-4.1.126-1.1 on GA media

netty-codec-http: Netty is vulnerable to request smuggling due to incorrect parsing of chunk extensions netty-codec: netty-codec-compression: Netty's BrotliDecoder is vulnerable to DoS via zip bomb style attack

Affected: Ubuntu:Pro:14.04:LTS: netty, Ubuntu:Pro:16.04:LTS: netty, Ubuntu:16.04:LTS: netty-3.9, Ubuntu:Pro:18.04:LTS: netty, Ubuntu:18.04:LTS: netty-3.9, Ubuntu:Pro:20.04:LTS: netty, Ubuntu:22.04:LTS: netty, Ubuntu:24.04:LTS: netty, Ubuntu:25.10: netty

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.

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM SPSS ausnutzen, um einen Denial of Service Angriff durchzuführen, und um Sicherheitsvorkehrungen zu umgehen.