CVE-2021-34549

{"id": "CVE-2021-34549", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2021-06-29T12:15:08.643", "references": [{"url": "https://blog.torproject.org/node/2041", "tags": ["Release Notes", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://gitlab.torproject.org/tpo/core/tor/-/issues/40391", "tags": ["Broken Link"], "source": "cve@mitre.org"}, {"url": "https://security.gentoo.org/glsa/202107-25", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005. Hashing is mishandled for certain retrieval of circuit data. Consequently. an attacker can trigger the use of an attacker-chosen circuit ID to cause algorithm inefficiency."}, {"lang": "es", "value": "Se ha detectado un problema en Tor versiones anteriores a 0.4.6.5, tambi\u00e9n se conoce como TROVE-2021-005. Un hashing es manejado inapropiadamente para determinadas recuperaciones de datos del circuito. Consecuentemente, un atacante puede desencadenar un ID de circuito elegido por el atacante para causar ineficiencia en el algoritmo"}], "lastModified": "2022-07-12T17:42:04.277", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C2666B22-DC07-4BFA-A756-3DC4E970EBDD", "versionEndExcluding": "0.3.5.15"}, {"criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "072B35B0-7EBF-4652-BB89-12B4BEC9A8EF", "versionEndExcluding": "0.4.4.9", "versionStartIncluding": "0.4.0.0"}, {"criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "57ED9234-622B-4B0D-8E29-2851A87DE0D1", "versionEndExcluding": "0.4.5.9", "versionStartIncluding": "0.4.5.0"}, {"criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EFD89230-DBEF-4134-9C42-8187CE542B7C", "versionEndExcluding": "0.4.6.5", "versionStartIncluding": "0.4.6.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}