Updated Netty packages are now available for Ubuntu Linux versions 16.04 LTS, 18.04 LTS, 20.04 LTS, 22.04 LTS, 24.04 LTS, and 24.10. These updates address a vulnerability that could allow an attacker to exploit file permission issues when writing temporary files, potentially leading to the leakage of sensitive information.

[USN-7284-1] Netty vulnerabilities

[USN-7284-1] Netty vulnerabilities

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Ubuntu Security Notice USN-7284-1
February 24, 2025

netty vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Netty.

Software Description:
- netty: Java NIO client/server socket framework

Details:

Jonathan Leitschuh discovered that Netty did not correctly handle file
permissions when writing temporary files. An attacker could possibly use
this issue to leak sensitive information. (CVE-2022-24823)

It was discovered that Netty did not correctly handle limiting the number
of fields when decoding a HTTP request. An attacker could possibly use
issue to cause a denial of service. This issue only affected
Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and
Ubuntu 24.04 LTS. (CVE-2024-29025)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.10
  libnetty-java                   1:4.1.48-10ubuntu0.1

Ubuntu 24.04 LTS
  libnetty-java                   1:4.1.48-9ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  libnetty-java                   1:4.1.48-4+deb11u2ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  libnetty-java                   1:4.1.45-1ubuntu0.1~esm2
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  libnetty-java                   1:4.1.7-4ubuntu0.1+esm3
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  libnetty-java                   1:4.0.34-1ubuntu0.1~esm2
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7284-1
  CVE-2022-24823, CVE-2024-29025

Package Information:
  https://launchpad.net/ubuntu/+source/netty/1:4.1.48-10ubuntu0.1