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recovering the private key by an attacker..\n\nWhile remote key recovery over a network was not attempted by the reporter,\ntiming measurements revealed a timing signal which may allow such an attack.\n\nOpenSSL does not directly support certificates with SM2 keys in TLS, and so\nthis CVE is not relevant in most TLS contexts. However, given that it is\npossible to add support for such certificates via a custom provider, coupled\nwith the fact that in such a custom provider context the private key may be\nrecoverable via remote timing measurements, we consider this to be a Moderate\nseverity issue.\n\nThe FIPS modules in 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this\nissue, as SM2 is not an approved algorithm."}, {"lang": "es", "value": "Resumen del problema: Existe un canal lateral de temporizaci\u00f3n que podr\u00eda permitir potencialmente la recuperaci\u00f3n remota de la clave privada en la implementaci\u00f3n del algoritmo SM2 en plataformas ARM de 64 bits.\n\nResumen del impacto: Un canal lateral de temporizaci\u00f3n en los c\u00e1lculos de firma SM2 en plataformas ARM de 64 bits podr\u00eda permitir la recuperaci\u00f3n de la clave privada por un atacante.\n\nAunque el informante no intent\u00f3 la recuperaci\u00f3n remota de la clave a trav\u00e9s de una red, las mediciones de temporizaci\u00f3n revelaron una se\u00f1al de temporizaci\u00f3n que podr\u00eda permitir tal ataque.\n\nOpenSSL no soporta directamente certificados con claves SM2 en TLS, por lo que este CVE no es relevante en la mayor\u00eda de los contextos TLS. Sin embargo, dado que es posible a\u00f1adir soporte para dichos certificados a trav\u00e9s de un proveedor personalizado, junto con el hecho de que en un contexto de proveedor personalizado de este tipo la clave privada podr\u00eda ser recuperable mediante mediciones remotas de temporizaci\u00f3n, consideramos que este es un problema de severidad Moderada.\n\nLos m\u00f3dulos FIPS en 3.5, 3.4, 3.3, 3.2, 3.1 y 3.0 no se ven afectados por este problema, ya que SM2 no es un algoritmo aprobado."}], "id": "CVE-2025-9231", "lastModified": "2026-11-09T20:51:27.060", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-9231", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-09-30T19:27:45.704985Z", "version": "2.0.3"}}]}, "published": "2025-09-30T14:15:41.190", "references": [{"source": "openssl-security@openssl.org", "tags": ["Patch"], "url": "https://github.com/openssl/openssl/commit/567f64386e43683888212226824b6a179885a0fe"}, {"source": "openssl-security@openssl.org", "tags": ["Patch"], "url": "https://github.com/openssl/openssl/commit/cba616c26ac8e7b37de5e77762e505ba5ca51698"}, {"source": "openssl-security@openssl.org", "tags": ["Patch"], "url": "https://github.com/openssl/openssl/commit/eed5adc9f969d77c94f213767acbb41ff923b6f4"}, {"source": "openssl-security@openssl.org", "tags": ["Patch"], "url": "https://github.com/openssl/openssl/commit/fc47a2ec078912b3e914fab5734535e76c4820c2"}, {"source": "openssl-security@openssl.org", "tags": ["Vendor Advisory"], "url": "https://openssl-library.org/news/secadv/20250930.txt"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2025/09/30/5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2026/05/11/11"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "tags": ["Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "tags": ["Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/html/ssa-089022.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "tags": ["Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/html/ssa-253495.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "tags": ["Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/html/ssa-585531.html"}], "sourceIdentifier": "openssl-security@openssl.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-385"}], "source": "openssl-security@openssl.org", "type": "Secondary"}]}

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"compat-openssl10", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "edk2", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "mingw-openssl", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "shim", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "shim-unsigned-x64", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "compat-openssl11", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "edk2", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "shim", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "shim-unsigned-aarch64", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "shim-unsigned-x64", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "compat-openssl11", "product_name": "Red Hat In-Vehicle Operating System 1"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "edk2", "product_name": "Red Hat In-Vehicle Operating System 1"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Affected", "package_name": "openssl", "product_name": "Red Hat In-Vehicle Operating System 1"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "shim", "product_name": "Red Hat In-Vehicle Operating System 1"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "shim-unsigned-aarch64", "product_name": "Red Hat In-Vehicle Operating System 1"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "shim-unsigned-x64", "product_name": "Red Hat In-Vehicle Operating System 1"}, {"cpe": "cpe:/a:redhat:jboss_core_services:1", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat JBoss Core Services"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2025-09-30T23:59:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-9231\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-9231"], "statement": "The vulnerability was rated as Moderate because, while it could enable recovery of private keys through timing side-channel analysis on 64-bit ARM platforms, successful exploitation requires high-precision timing measurements and a specialized attack setup. OpenSSL does not natively support SM2 certificates in TLS, limiting the exposure in common use cases. The issue only becomes relevant in custom provider contexts where SM2 is enabled, further reducing the likelihood of widespread impact. Therefore, although the confidentiality impact is high if exploited, the practical attack complexity and limited applicability justify a Moderate severity rating.", "threat_severity": "Moderate"}

{"created": "2025-10-02T08:46:21.361652+00:00", "updated": "2025-10-02T08:46:21.361705+00:00", "vendors": ["openssl", "openssl$PRODUCT$openssl"]}