Ubuntu 25.10: Netty Important Email Spoofing Vuln USN-7843-1
ubuntu
October 30, 2025
Netty could be made to send emails as your login if it received specially crafted input.
Summary
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Netty could be made to send emails as your login if it received specially crafted input. Software Description: - netty: Java NIO client/server socket framework Details: It was discovered that Netty did not properly handle user input. A remote attacker could possibly use this issue to forge arbitrary emails from a trusted server.
Topics Covered
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 libnetty-java 1:4.1.48-10ubuntu0.25.10.1 Ubuntu 25.04 libnetty-java 1:4.1.48-10ubuntu0.25.04.1 Ubuntu 24.04 LTS libnetty-java 1:4.1.48-9ubuntu0.1~esm2 Available with Ubuntu Pro Ubuntu 22.04 LTS libnetty-java 1:4.1.48-4+deb11u2ubuntu0.1~esm2 Available with Ubuntu Pro Ubuntu 20.04 LTS libnetty-java 1:4.1.45-1ubuntu0.1~esm3 Available with Ubuntu Pro Ubuntu 18.04 LTS libnetty-java 1:4.1.7-4ubuntu0.1+esm4 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.
References
https://ubuntu.com/security/notices/USN-7843-1
CVE-2025-59419
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Severity
important
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Critical
Ubuntu Security Notice USN-7843-1
Topics Covered
Package Information
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