CVE-2025-59419

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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."}, {"lang": "es", "value": "Netty es un framework de aplicaci\u00f3n de red as\u00edncrono y basado en eventos. En versiones anteriores a 4.1.128.Final y 4.2.7.Final, el c\u00f3dec SMTP en Netty contiene una vulnerabilidad de inyecci\u00f3n de comandos SMTP debido a una validaci\u00f3n de entrada insuficiente para los caracteres de Retorno de Carro (\\r) y Salto de L\u00ednea (\\n) en los par\u00e1metros proporcionados por el usuario. La vulnerabilidad existe en io.netty.handler.codec.smtp.DefaultSmtpRequest, donde los par\u00e1metros se concatenan directamente en la cadena de comandos SMTP sin sanitizaci\u00f3n. Cuando m\u00e9todos como SmtpRequests.rcpt(recipient) son llamados con una cadena maliciosa que contiene secuencias CRLF, los atacantes pueden inyectar comandos SMTP arbitrarios. Debido a que los comandos inyectados se env\u00edan desde la direcci\u00f3n IP confiable del servidor, los correos electr\u00f3nicos resultantes probablemente pasar\u00e1n las comprobaciones de autenticaci\u00f3n SPF y DKIM, haci\u00e9ndolos parecer leg\u00edtimos. Esto permite a atacantes remotos que pueden controlar los par\u00e1metros de comandos SMTP (como los destinatarios de correo electr\u00f3nico) falsificar correos electr\u00f3nicos arbitrarios desde el servidor confiable, potencialmente suplantando a ejecutivos y falsificando comunicaciones corporativas de alto riesgo. Este problema ha sido parcheado en las versiones 4.1.129.Final y 4.2.8.Final. No existen soluciones alternativas conocidas."}], "id": "CVE-2025-59419", "lastModified": "2026-10-19T16:10:00.260", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-59419", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-15T17:21:01.815752Z", "version": "2.0.3"}}]}, "published": "2025-10-15T16:15:35.290", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/netty/netty/commit/1782e8c2060a244c4d4e6f9d9112d5517ca05120"}, {"source": "security-advisories@github.com", "url": "https://github.com/netty/netty/security/advisories/GHSA-jq43-27x9-3v86"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.depthfirst.com/post/our-ai-agent-found-a-netty-zero-day-that-bypasses-email-authentication-the-story-of-cve-2025-59419"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-93"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "io.netty/netty-codec-smtp: Netty netty-codec-smtp SMTP Command Injection", "id": "2404232", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404232"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-93", "details": ["No description is available for this CVE."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2025-59419", "package_state": [{"cpe": "cpe:/a:redhat:amq_clients:2023", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "AMQ Clients"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:camel_spring_boot:4", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Red Hat build of Apache Camel for Spring Boot 4"}, {"cpe": "cpe:/a:redhat:debezium:2", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Red Hat build of Debezium 2"}, {"cpe": "cpe:/a:redhat:debezium:3", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Red Hat build of Debezium 3"}, {"cpe": "cpe:/a:redhat:jboss_data_grid:8", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Red Hat Data Grid 8"}, {"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Red Hat Fuse 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:7", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Red Hat JBoss Enterprise Application Platform 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:8", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Red Hat JBoss Enterprise Application Platform 8"}, {"cpe": "cpe:/a:redhat:jbosseapxp", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Red Hat JBoss Enterprise Application Platform Expansion Pack"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_bpms_platform:7", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Red Hat Process Automation 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:amq_streams:3", "fix_state": "Fix deferred", "package_name": "netty-codec-smtp", "product_name": "streams for Apache Kafka 3"}], "public_date": "2025-10-15T15:42:30Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-59419\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-59419\nhttps://github.com/netty/netty/commit/1782e8c2060a244c4d4e6f9d9112d5517ca05120\nhttps://github.com/netty/netty/security/advisories/GHSA-jq43-27x9-3v86"], "threat_severity": "Moderate"}

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