{"schemaVersion":3,"id":"CVE-2020-17444","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An issue was discovered in picoTCP 1.7.0. The routine for processing the next header field (and deducing whether the IPv6 extension headers are valid) doesn't check whether the header extension length field would overflow. Therefore, if it wraps around to zero, iterating through the extension headers will not increment the current data pointer. This leads to an infinite loop and Denial-of-Service in pico_ipv6_check_headers_sequence() in pico_ipv6.c.","dates":{"published":"2020-12-11T22:32:36.000Z","modified":"2024-08-04T13:53:17.387Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.02832,"percentile":0.86509,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.02832},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.02832,"percentile":0.86509}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02832,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02832,"percentile":nu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Input Validation","description":"The product receives input or data, but it does\n        not validate or incorrectly validates that the input has the\n        properties that are required to process the data safely and\n        correctly.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/20.html"},{"id":"CWE-190","name":"Integer 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. 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