{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"cveId": "CVE-2021-4239", "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "state": "PUBLISHED", "assignerShortName": "Go", "dateReserved": "2022-07-29T20:06:51.345Z", "datePublished": "2022-12-27T21:13:53.590Z", "dateUpdated": "2023-06-12T19:04:19.549Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "shortName": "Go", "dateUpdated": "2023-06-12T19:04:19.549Z"}, "title": "Weak encryption and denial of service in github.com/flynn/noise", "descriptions": [{"lang": "en", "value": "The Noise protocol implementation suffers from weakened cryptographic security after encrypting 2^64 messages, and a potential denial of service attack. After 2^64 (~18.4 quintillion) messages are encrypted with the Encrypt function, the nonce counter will wrap around, causing multiple messages to be encrypted with the same key and nonce. In a separate issue, the Decrypt function increments the nonce state even when it fails to decrypt a message. If an attacker can provide an invalid input to the Decrypt function, this will cause the nonce state to desynchronize between the peers, resulting in a failure to encrypt all subsequent messages."}], "affected": [{"vendor": "github.com/flynn/noise", "product": "github.com/flynn/noise", "collectionURL": "https://pkg.go.dev", "packageName": "github.com/flynn/noise", "versions": [{"version": "0", "lessThan": "1.0.0", "status": "affected", "versionType": "semver"}], "programRoutines": [{"name": "CipherState.Encrypt"}, {"name": "CipherState.Decrypt"}, {"name": "symmetricState.EncryptAndHash"}, {"name": "HandshakeState.ReadMessage"}, {"name": "HandshakeState.WriteMessage"}, {"name": "symmetricState.DecryptAndHash"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE 400: Uncontrolled Resource Consumption"}]}], "references": [{"url": "https://github.com/flynn/noise/pull/44"}, {"url": "https://pkg.go.dev/vuln/GO-2022-0425"}]}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:noiseprotocol:noise:-:*:*:*:*:go:*:*", "matchCriteriaId": "09D5D86A-ADA9-4223-B806-D248CD55F94A", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "The Noise protocol implementation suffers from weakened cryptographic security after encrypting 2^64 messages, and a potential denial of service attack. After 2^64 (~18.4 quintillion) messages are encrypted with the Encrypt function, the nonce counter will wrap around, causing multiple messages to be encrypted with the same key and nonce. In a separate issue, the Decrypt function increments the nonce state even when it fails to decrypt a message. If an attacker can provide an invalid input to the Decrypt function, this will cause the nonce state to desynchronize between the peers, resulting in a failure to encrypt all subsequent messages."}, {"lang": "es", "value": "La implementaci\u00f3n del protocolo Noise sufre de seguridad criptogr\u00e1fica debilitada despu\u00e9s de cifrar 2^64 mensajes y un posible ataque de denegaci\u00f3n de servicio. Despu\u00e9s de cifrar 2^64 (~18,4 quintillones) de mensajes con la funci\u00f3n Encrypt , el contador nonce se ajustar\u00e1, lo que provocar\u00e1 que se cifren varios mensajes con la misma clave y nonce. En un tema aparte, la funci\u00f3n Decrypt incrementa el estado nonce incluso cuando no logra descifrar un mensaje. Si un atacante puede proporcionar una entrada no v\u00e1lida a la funci\u00f3n Decrypt, esto har\u00e1 que el estado nonce se desincronice entre los pares, lo que resultar\u00e1 en un fallo al cifrar todos los mensajes posteriores."}], "id": "CVE-2021-4239", "lastModified": "2023-01-06T01:30:52.057", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-12-27T22:15:12.123", "references": [{"source": "security@golang.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/flynn/noise/pull/44"}, {"source": "security@golang.org", "tags": ["Patch", "Vendor Advisory"], "url": "https://pkg.go.dev/vuln/GO-2022-0425"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-311"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}