CVE-2021-39246

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Exact timestamps of these onion-service visits are logged locally, and an attacker might be able to compare them to timestamp data collected by the destination server (or collected by a rogue site within the Tor network)."}, {"lang": "es", "value": "Tor Browser hasta la versi\u00f3n 10.5.6 y la versi\u00f3n 11.x hasta la 11.0a4 permite un ataque de correlaci\u00f3n que puede comprometer la privacidad de las visitas a las direcciones v2 de la cebolla. Las marcas de tiempo exactas de estas visitas al servicio de cebolla se registran localmente, y un atacante podr\u00eda ser capaz de compararlas con los datos de las marcas de tiempo recogidas por el servidor de destino (o recogidas por un sitio falso dentro de la red Tor)"}], "id": "CVE-2021-39246", "lastModified": "2026-06-17T04:03:23.677", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 3.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "PHYSICAL", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-09-24T19:15:07.147", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-111.md"}, {"source": "cve@mitre.org", "tags": ["Patch", "Vendor Advisory"], "url": "https://gitlab.torproject.org/tpo/core/tor/-/commit/80c404c4b79f3bcba3fc4585d4c62a62a04f3ed9"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://gitlab.torproject.org/tpo/core/tor/-/merge_requests/434"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://sick.codes/sick-2021-111"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.privacyaffairs.com/cve-2021-39246-tor-vulnerability"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-111.md"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://gitlab.torproject.org/tpo/core/tor/-/commit/80c404c4b79f3bcba3fc4585d4c62a62a04f3ed9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://gitlab.torproject.org/tpo/core/tor/-/merge_requests/434"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://sick.codes/sick-2021-111"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.privacyaffairs.com/cve-2021-39246-tor-vulnerability"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-532"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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