CVE-2023-50923

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [{"sourceIdentifier": "cve@mitre.org", "tags": ["disputed"]}], "descriptions": [{"lang": "en", "value": "In QUIC in RFC 9000, the Latency Spin Bit specification (section 17.4) does not strictly constrain the bit value when the feature is disabled, which might allow remote attackers to construct a covert channel with data represented as changes to the bit value. NOTE: The \"Sheridan, S., Keane, A. (2015). In Proceedings of the 14th European Conference on Cyber Warfare and Security (ECCWS), University of Hertfordshire, Hatfield, UK.\" paper says \"Modern Internet communication protocols provide an almost infinite number of ways in which data can be hidden or embed whithin seemingly normal network traffic.\""}, {"lang": "es", "value": "En QUIC en RFC 9000, la especificaci\u00f3n Latency Spin Bit (secci\u00f3n 17.4) no restringe estrictamente el valor del bit cuando la caracter\u00edstica est\u00e1 deshabilitada, lo que podr\u00eda permitir a atacantes remotos construir un canal encubierto con datos representados como cambios en el valor del bit. NOTA: \"Sheridan, S., Keane, A. (2015). En Actas de la 14\u00aa Conferencia Europea sobre Guerra Cibern\u00e9tica y Seguridad (ECCWS), Universidad de Hertfordshire, Hatfield, Reino Unido\". El art\u00edculo dice: \"Los protocolos de comunicaci\u00f3n de Internet modernos proporcionan un n\u00famero casi infinito de formas en las que los datos pueden ocultarse o incrustarse en el tr\u00e1fico de red aparentemente normal\"."}], "id": "CVE-2023-50923", "lastModified": "2026-06-17T06:40:14.607", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-50923", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-08-15T20:16:01.121510Z", "version": "2.0.3"}}]}, "published": "2024-02-21T00:15:07.597", "references": [{"source": "cve@mitre.org", "url": "https://arrow.tudublin.ie/nsdcon/2/"}, {"source": "cve@mitre.org", "url": "https://ieeexplore.ieee.org/document/10427406"}, {"source": "cve@mitre.org", "url": "https://www.rfc-editor.org/rfc/rfc9000.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://arrow.tudublin.ie/nsdcon/2/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://ieeexplore.ieee.org/document/10427406"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.rfc-editor.org/rfc/rfc9000.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-352"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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