CVE-2015-3146

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"es", "value": "Los manejadores de paquete (1) SSH_MSG_NEWKEYS y (2) SSH_MSG_KEXDH_REPLY en package_cb.c en libssh en versiones anteriores a 0.6.5 no valida correctamente el estado, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (referencia a puntero NULL y ca\u00edda) a trav\u00e9s de un paquete SSH manipulado."}], "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/476.html\">CWE-476: NULL Pointer Dereference</a>", "id": "CVE-2015-3146", "lastModified": "2026-06-17T00:25:23.407", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, 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{"acknowledgement": "Red Hat would like to thank libssh team for reporting this issue.", "bugzilla": {"description": "libssh: null pointer dereference due to a logical error in the handling of a SSH_MSG_NEWKEYS and KEXDH_REPLY packets", "id": "1213775", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1213775"}, "csaw": false, "cvss": {"cvss_base_score": "5.0", "cvss_scoring_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "status": "draft"}, "cwe": "CWE-476", "details": ["The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb.c in libssh before 0.6.5 do not properly validate state, which allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted SSH packet."], "name": "CVE-2015-3146", "package_state": [{"cpe": "cpe:/o:redhat:rhel_eus:7.1", "fix_state": "Affected", "package_name": "libssh", "product_name": "Red Hat Enterprise Linux Extended Update Support 7.1"}], "public_date": "2015-04-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2015-3146\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-3146\nhttps://www.libssh.org/2015/04/30/libssh-0-6-5-security-and-bugfix-release/"], "threat_severity": "Moderate"}

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