CVE-2021-34430

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{"affected": [{"affectedData": [{"product": "Eclipse TinyDTLS", "vendor": "The Eclipse Foundation", "versions": [{"lessThanOrEqual": "0.9-rc1", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "emo@eclipse.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:eclipse:tinydtls:*:*:*:*:*:*:*:*", "matchCriteriaId": "707B94F7-0133-4C8C-B06F-C75AE4AFDF30", "versionEndIncluding": "0.8.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:eclipse:tinydtls:0.9:rc1:*:*:*:*:*:*", "matchCriteriaId": "E6F6D602-748C-4FE8-A5DC-69581B5FF326", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Eclipse TinyDTLS through 0.9-rc1 relies on the rand function in the C library, which makes it easier for remote attackers to compute the master key and then decrypt DTLS traffic."}, {"lang": "es", "value": "Eclipse TinyDTLS versiones hasta 0.9-rc1 se basa en la funci\u00f3n rand de la biblioteca C, lo que facilita a atacantes remotos el c\u00e1lculo de la clave maestra y luego el descifrado del tr\u00e1fico DTLS"}], "id": "CVE-2021-34430", "lastModified": "2026-06-17T03:55:51.227", "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": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-08T03:15:07.643", "references": [{"source": "emo@eclipse.org", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=568803"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=568803"}], "sourceIdentifier": "emo@eclipse.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-338"}], "source": "emo@eclipse.org", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-326"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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