{"containers":{"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"descriptions":[{"lang":"en","value":"Upon receiving each incoming request header data, Envoy will iterate over existing request headers to verify that the total size of the headers stays below a maximum limit. The implementation in versions 1.10.0 through 1.11.1 for HTTP/1.x traffic and all versions of Envoy for HTTP/2 traffic had O(n^2) performance characteristics. A remote attacker may craft a request that stays below the maximum request header size but consists of many thousands of small headers to consume CPU and result in a denial-of-service attack."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2019-10-09T15:25:02.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"tags":["x_refsource_MISC"],"url":"https://github.com/envoyproxy/envoy/commits/master"},{"tags":["x_refsource_MISC"],"url":"https://github.com/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014"},{"tags":["x_refsource_MISC"],"url":"https://github.com/envoyproxy/envoy/issues/8520"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2019-15226","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Upon receiving each incoming request header data, Envoy will iterate over existing request headers to verify that the total size of the headers stays below a maximum limit. The implementation in versions 1.10.0 through 1.11.1 for HTTP/1.x traffic and all versions of Envoy for HTTP/2 traffic had O(n^2) performance characteristics. A remote attacker may craft a request that stays below the maximum request header size but consists of many thousands of small headers to consume CPU and result in a denial-of-service attack."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"https://github.com/envoyproxy/envoy/commits/master","refsource":"MISC","url":"https://github.com/envoyproxy/envoy/commits/master"},{"name":"https://github.com/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014","refsource":"MISC","url":"https://github.com/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014"},{"name":"https://github.com/envoyproxy/envoy/issues/8520","refsource":"MISC","url":"https://github.com/envoyproxy/envoy/issues/8520"}]}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-05T00:42:01.230Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/envoyproxy/envoy/commits/master"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/envoyproxy/envoy/issues/8520"}]}]},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2019-15226","datePublished":"2019-10-09T15:25:02.000Z","dateReserved":"2019-08-19T00:00:00.000Z","dateUpdated":"2024-08-05T00:42:01.230Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}