{"id":"CVE-2021-4234","state":"PUBLISHED","title":"OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not res","description":"OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack.","publishedAt":"2022-07-06T19:10:17.000Z","updatedAt":"2024-08-03T17:23:09.056Z","severity":null,"assigner":"OpenVPN","products":["n/a OpenVPN Access Server"],"affected":[{"vendor":"n/a","product":"OpenVPN Access Server","versions":[{"version":"2.10 and prior version","status":"affected"}]}],"references":["https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0"],"weaknesses":["CWE-406"],"ingestedAt":"2026-10-29T19:49:23.890Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/4xxx/CVE-2021-4234.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-4234","state":"PUBLISHED","datePublished":"2022-07-06T19:10:17.000Z","dateUpdated":"2024-08-03T17:23:09.056Z","assignerShortName":"OpenVPN","assignerOrgId":"36a55730-e66d-4d39-8ca6-3c3b3017965e","dateReserved":"2022-07-01T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack."}],"affected":[{"vendor":"n/a","product":"OpenVPN Access Server","versions":[{"version":"2.10 and prior version","status":"affected"}]}],"references":[{"url":"https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-406","description":"CWE-406: Insufficient Control of Network Message Volume","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"OpenVPN","dateUpdated":"2022-07-06T19:10:17.000Z","orgId":"36a55730-e66d-4d39-8ca6-3c3b3017965e"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security@openvpn.net","ID":"CVE-2021-4234","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"OpenVPN Access Server","version":{"version_data":[{"version_value":"2.10 and prior version"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-406: Insufficient Control of Network Message Volume"}]}]},"references":{"reference_data":[{"name":"https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0","refsource":"MISC","url":"https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T17:23:09.056Z"}}]}}}