{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-12T18:03:58.509","vulnerabilities":[{"cve":{"id":"CVE-2021-3761","sourceIdentifier":"cna@cloudflare.com","published":"2021-09-09T14:15:09.397","lastModified":"2024-11-21T06:22:21.710","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Any CA issuer in the RPKI can trick OctoRPKI prior to 1.3.0 into emitting an invalid VRP \"MaxLength\" value, causing RTR sessions to terminate. An attacker can use this to disable RPKI Origin Validation in a victim network (for example AS 13335 - Cloudflare) prior to launching a BGP hijack which during normal operations would be rejected as \"RPKI invalid\". Additionally, in certain deployments RTR session flapping in and of itself also could cause BGP routing churn, causing availability issues."},{"lang":"es","value":"Cualquier emisor de CA en la RPKI puede engañar a OctoRPKI anterior a versión 1.3.0 para que emita un valor \"MaxLength\" de VRP no válido, causando la terminación de las sesiones RTR. Un atacante puede usar esto para deshabilitar la Comprobación de Origen RPKI en una red víctima (por ejemplo AS 13335 - Cloudflare) antes de lanzar un hijack BGP que durante las operaciones normales sería rechazado como \"RPKI invalid\". Además, en determinados despliegues, la ruptura de la sesión de RTR también podría causar por sí misma la ruptura del enrutamiento BGP, causando problemas de disponibilidad"}],"metrics":{"cvssMetricV31":[{"source":"cna@cloudflare.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},{"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:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":10.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:cloudflare:octorpki:*:*:*:*:*:*:*:*","versionEndExcluding":"1.3.0","matchCriteriaId":"A39C112F-E066-40D1-9CAC-9D9F89B467EE"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*","matchCriteriaId":"FA6FEEC2-9F11-4643-8827-749718254FED"}]}]}],"references":[{"url":"https://github.com/cloudflare/cfrpki/security/advisories/GHSA-c8xp-8mf3-62h9","source":"cna@cloudflare.com","tags":["Patch","Third Party Advisory"]},{"url":"https://www.debian.org/security/2022/dsa-5041","source":"cna@cloudflare.com","tags":["Third Party Advisory"]},{"url":"https://github.com/cloudflare/cfrpki/security/advisories/GHSA-c8xp-8mf3-62h9","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://www.debian.org/security/2022/dsa-5041","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}