CVE-2021-37606

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:meow_hash_project:meow_hash:0.5:*:*:*:*:*:*:*", "matchCriteriaId": "5F0AAF9A-2F56-400E-B92A-C15CBA7184AD", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Meow hash 0.5/calico does not sufficiently thwart key recovery by an attacker who can query whether there's a collision in the bottom bits of the hashes of two messages, as demonstrated by an attack against a long-running web service that allows the attacker to infer collisions by measuring timing differences."}, {"lang": "es", "value": "Meow hash versi\u00f3n 0.5/calico, no frustra suficientemente la recuperaci\u00f3n de claves por un atacante que puede consultar si se presenta una colisi\u00f3n en los bits inferiores de los hashes de dos mensajes, como se ha demostrado por un ataque contra un servicio web de larga duraci\u00f3n que permite al atacante inferir colisiones al medir las diferencias de tiempo"}], "id": "CVE-2021-37606", "lastModified": "2026-06-17T04:00:49.443", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-30T14:15:22.153", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://news.ycombinator.com/item?id=27978878"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://peter.website/meow-hash-cryptanalysis"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://news.ycombinator.com/item?id=27978878"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://peter.website/meow-hash-cryptanalysis"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-203"}, {"lang": "en", "value": "CWE-326"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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