{"schemaVersion":3,"id":"CVE-2021-28682","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which a very large grpc-timeout value leads to unexpected timeout 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Overflow or Wraparound","description":"The product performs a calculation that can\n         produce an integer overflow or wraparound when the logic\n         assumes that the resulting value will always be larger than\n         the original value. This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.html"}],"affected":[{"vendor":"envoyproxy","product":"envoy","name":"envoy","label":"envoy","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"1.14.6","noFixRecorded":false,"fixedIn":null},{"text":"1.15.3","noFixRecorded":false,"fixedIn":null},{"text":"1.16.2","noFixRecorded":false,"fixedIn":null},{"text":"1.17.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.14.6 | 1.15.3 | 1.16.2 | 1.17.1","eol":{"isEol":true,"eolDate":"2021-04-08T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"1.14","label":"1.14","eolFrom":"2021-04-08T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":"1.14.7"},"product":{"name":"envoy","label":"Envoy","category":"server-app"}},"hubHref":"/vendor/envoyproxy/envoy"}],"affectedCount":1,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://github.com/envoyproxy/envoy/releases","label":"github.com/envoyproxy/envoy/releases","hostname":"github.com","tags":["X Refsource MISC","Third Party Advisory"]},{"url":"https://blog.envoyproxy.io","label":"blog.envoyproxy.io","hostname":"blog.envoyproxy.io","tags":["X Refsource MISC","Vendor Advisory"]},{"url":"https://github.com/envoyproxy/envoy/blob/15e3b9dbcc9aaa9d391fa8033904aad1ea1ae70d/api/envoy/api/v2/cluster.proto#L36","label":"github.com/envoyproxy/…","hostname":"github.com","tags":["X Refsource MISC","Exploit","Third Party Advisory"]},{"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-r22g-5f3x-xjgg","label":"github.com/envoyproxy/envoy/security/advisories/GHSA-r22g-5f3x-xjgg","hostname":"github.com","tags":["Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":["RHSA-2021:1322","RHSA-2021:1324"],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-05-20T16:15:20.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-03T21:47:32.986Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":40,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T19:08:22.212Z","stale":false,"partial":false}}