{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-07-01T13:49:48.622","vulnerabilities":[{"cve":{"id":"CVE-2021-4239","sourceIdentifier":"security@golang.org","published":"2022-12-27T22:15:12.123","lastModified":"2026-06-17T04:19:19.820","vulnStatus":"Modified","cveTags":[],"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 implementación del protocolo Noise sufre de seguridad criptográfica debilitada después de cifrar 2^64 mensajes y un posible ataque de denegación de servicio. Después de cifrar 2^64 (~18,4 quintillones) de mensajes con la función Encrypt , el contador nonce se ajustará, lo que provocará que se cifren varios mensajes con la misma clave y nonce. En un tema aparte, la función Decrypt incrementa el estado nonce incluso cuando no logra descifrar un mensaje. Si un atacante puede proporcionar una entrada no válida a la función Decrypt, esto hará que el estado nonce se desincronice entre los pares, lo que resultará en un fallo al cifrar todos los mensajes posteriores."}],"affected":[{"source":"security@golang.org","affectedData":[{"vendor":"github.com/flynn/noise","product":"github.com/flynn/noise","defaultStatus":"unaffected","collectionURL":"https://pkg.go.dev","packageName":"github.com/flynn/noise","programRoutines":[{"name":"CipherState.Encrypt"},{"name":"CipherState.Decrypt"},{"name":"symmetricState.EncryptAndHash"},{"name":"HandshakeState.ReadMessage"},{"name":"HandshakeState.WriteMessage"},{"name":"symmetricState.DecryptAndHash"}],"versions":[{"version":"0","lessThan":"1.0.0","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":3.6},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2025-04-14T16:59:11.062582Z","id":"CVE-2021-4239","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-311"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:noiseprotocol:noise:-:*:*:*:*:go:*:*","matchCriteriaId":"09D5D86A-ADA9-4223-B806-D248CD55F94A"}]}]}],"references":[{"url":"https://github.com/flynn/noise/pull/44","source":"security@golang.org","tags":["Patch","Third Party Advisory"]},{"url":"https://pkg.go.dev/vuln/GO-2022-0425","source":"security@golang.org","tags":["Patch","Vendor Advisory"]},{"url":"https://github.com/flynn/noise/pull/44","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://pkg.go.dev/vuln/GO-2022-0425","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]}]}}]}