{"id":"CVE-2020-27222","state":"PUBLISHED","title":"In Eclipse Californium version 2.3.0 to 2.6.0, the certificate based (x509 and RPK) DTLS handshakes accidentally fails, because the DTLS server side sticks to a wrong internal stat","description":"In Eclipse Californium version 2.3.0 to 2.6.0, the certificate based (x509 and RPK) DTLS handshakes accidentally fails, because the DTLS server side sticks to a wrong internal state. That wrong internal state is set by a previous certificate based DTLS handshake failure with TLS parameter mismatch. The DTLS server side must be restarted to recover this. This allow clients to force a DoS.","publishedAt":"2021-02-03T15:45:13.000Z","updatedAt":"2024-08-04T16:11:36.000Z","severity":null,"assigner":"eclipse","products":["The Eclipse Foundation Eclipse Californium"],"affected":[{"vendor":"The Eclipse Foundation","product":"Eclipse Californium","versions":[{"version":"[2.3.0, 2.6.0]","status":"affected"}]}],"references":["https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844"],"weaknesses":["CWE-372"],"ingestedAt":"2026-10-29T19:47:11.046Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/27xxx/CVE-2020-27222.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2020-27222","state":"PUBLISHED","datePublished":"2021-02-03T15:45:13.000Z","dateUpdated":"2024-08-04T16:11:36.000Z","assignerShortName":"eclipse","assignerOrgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","dateReserved":"2020-10-19T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"In Eclipse Californium version 2.3.0 to 2.6.0, the certificate based (x509 and RPK) DTLS handshakes accidentally fails, because the DTLS server side sticks to a wrong internal state. That wrong internal state is set by a previous certificate based DTLS handshake failure with TLS parameter mismatch. The DTLS server side must be restarted to recover this. This allow clients to force a DoS."}],"affected":[{"vendor":"The Eclipse Foundation","product":"Eclipse Californium","versions":[{"version":"[2.3.0, 2.6.0]","status":"affected"}]}],"references":[{"url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844","tags":["x_refsource_CONFIRM"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-372","description":"CWE-372: Incomplete Internal State Distinction","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"eclipse","dateUpdated":"2021-02-03T16:36:38.000Z","orgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security@eclipse.org","ID":"CVE-2020-27222","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Eclipse Californium","version":{"version_data":[{"version_value":"[2.3.0, 2.6.0]"}]}}]},"vendor_name":"The Eclipse Foundation"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"In Eclipse Californium version 2.3.0 to 2.6.0, the certificate based (x509 and RPK) DTLS handshakes accidentally fails, because the DTLS server side sticks to a wrong internal state. That wrong internal state is set by a previous certificate based DTLS handshake failure with TLS parameter mismatch. The DTLS server side must be restarted to recover this. This allow clients to force a DoS."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-372: Incomplete Internal State Distinction"}]}]},"references":{"reference_data":[{"name":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844","refsource":"CONFIRM","url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T16:11:36.000Z"}}]}}}