{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2025-59419","title":"Title"},{"category":"description","text":"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.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2025-59419","url":"https://www.suse.com/security/cve/CVE-2025-59419"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1252097 for CVE-2025-59419","url":"https://bugzilla.suse.com/1252097"},{"category":"external","summary":"Advisory link for SUSE-SU-2025:4087-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2025-November/023274.html"}],"title":"SUSE CVE 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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.","title":"CVE description"}],"product_status":{"known_affected":["SUSE Manager Server LTS 4.3:netty"],"known_not_affected":["SLES-LTSS-TERADATA 15 SP2:netty3","SUSE Linux Enterprise Desktop 15 SP6:netty3","SUSE Linux Enterprise Desktop 15 SP7:netty3","SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS:netty3","SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:netty3","SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS:netty3","SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:netty3","SUSE Linux Enterprise High Performance Computing 15 SP6:netty3","SUSE Linux Enterprise High Performance Computing 15 SP7:netty3","SUSE Linux Enterprise Module for Development Tools 15 SP6:netty3","SUSE Linux Enterprise Module for Development Tools 15 SP7:netty3","SUSE Linux Enterprise Server 15 SP2-LTSS:netty3","SUSE Linux Enterprise Server 15 SP3-LTSS:netty3","SUSE Linux Enterprise Server 15 SP4-LTSS:netty3","SUSE Linux Enterprise 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