Security update for netty, netty-tcnative SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:4087-1 Final 1 1 2025-11-12T19:35:11Z current 2025-11-12T19:35:11Z 2025-11-12T19:35:11Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for netty, netty-tcnative This update for netty, netty-tcnative fixes the following issues: - CVE-2025-59419: fixed SMTP command injection vulnerability that allowed email forgery (bsc#1252097) The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-4087,SUSE-SLE-Module-Development-Tools-15-SP6-2025-4087,SUSE-SLE-Module-Development-Tools-15-SP7-2025-4087,SUSE-SLE-Module-Packagehub-Subpackages-15-SP6-2025-4087,SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2025-4087,openSUSE-SLE-15.6-2025-4087 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2025/suse-su-20254087-1/ Link for SUSE-SU-2025:4087-1 https://lists.suse.com/pipermail/sle-security-updates/2025-November/023274.html E-Mail link for SUSE-SU-2025:4087-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1252097 SUSE Bug 1252097 https://www.suse.com/security/cve/CVE-2025-59419/ SUSE CVE CVE-2025-59419 page SUSE Linux Enterprise Module for Development Tools 15 SP6 SUSE Linux Enterprise Module for Development Tools 15 SP7 SUSE Linux Enterprise Module for Package Hub 15 SP6 SUSE Linux Enterprise Module for Package Hub 15 SP7 openSUSE Leap 15.6 netty-4.1.128-150200.4.37.1 netty-bom-4.1.128-150200.4.37.1 netty-javadoc-4.1.128-150200.4.37.1 netty-parent-4.1.128-150200.4.37.1 netty-tcnative-2.0.74-150200.3.33.1 netty-tcnative-javadoc-2.0.74-150200.3.33.1 netty-tcnative-openssl-dynamic-2.0.74-150200.3.33.1 netty-tcnative-2.0.74-150200.3.33.1 as a component of SUSE Linux Enterprise Module for Development Tools 15 SP6 netty-tcnative-2.0.74-150200.3.33.1 as a component of SUSE Linux Enterprise Module for Development Tools 15 SP7 netty-4.1.128-150200.4.37.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP6 netty-javadoc-4.1.128-150200.4.37.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP6 netty-4.1.128-150200.4.37.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP7 netty-javadoc-4.1.128-150200.4.37.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP7 netty-4.1.128-150200.4.37.1 as a component of openSUSE Leap 15.6 netty-javadoc-4.1.128-150200.4.37.1 as a component of openSUSE Leap 15.6 netty-tcnative-2.0.74-150200.3.33.1 as a component of openSUSE Leap 15.6 netty-tcnative-javadoc-2.0.74-150200.3.33.1 as a component of openSUSE Leap 15.6 Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.128.Final and 4.2.7.Final, the SMTP codec in Netty contains an SMTP command injection vulnerability due to insufficient input validation for Carriage Return (\r) and Line Feed (\n) characters in user-supplied parameters. The vulnerability exists in io.netty.handler.codec.smtp.DefaultSmtpRequest, where parameters are directly concatenated into the SMTP command string without sanitization. When methods such as SmtpRequests.rcpt(recipient) are called with a malicious string containing CRLF sequences, attackers can inject arbitrary SMTP commands. Because the injected commands are sent from the server's trusted IP address, resulting emails will likely pass SPF and DKIM authentication checks, making them appear legitimate. This allows remote attackers who can control SMTP command parameters (such as email recipients) to forge arbitrary emails from the trusted server, potentially impersonating executives and forging high-stakes corporate communications. This issue has been patched in versions 4.1.129.Final and 4.2.8.Final. No known workarounds exist. CVE-2025-59419 SUSE Linux Enterprise Module for Development Tools 15 SP6:netty-tcnative-2.0.74-150200.3.33.1 SUSE Linux Enterprise Module for Development Tools 15 SP7:netty-tcnative-2.0.74-150200.3.33.1 SUSE Linux Enterprise Module for Package Hub 15 SP6:netty-4.1.128-150200.4.37.1 SUSE Linux Enterprise Module for Package Hub 15 SP6:netty-javadoc-4.1.128-150200.4.37.1 SUSE Linux Enterprise Module for Package Hub 15 SP7:netty-4.1.128-150200.4.37.1 SUSE Linux Enterprise Module for Package Hub 15 SP7:netty-javadoc-4.1.128-150200.4.37.1 openSUSE Leap 15.6:netty-4.1.128-150200.4.37.1 openSUSE Leap 15.6:netty-javadoc-4.1.128-150200.4.37.1 openSUSE Leap 15.6:netty-tcnative-2.0.74-150200.3.33.1 openSUSE Leap 15.6:netty-tcnative-javadoc-2.0.74-150200.3.33.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254087-1/ https://www.suse.com/security/cve/CVE-2025-59419.html CVE-2025-59419 https://bugzilla.suse.com/1252097 SUSE Bug 1252097