{"id":"CVE-2019-9750","aliases":["EUVD-2019-19113","GHSA-8vwf-phwx-jwqp"],"status":"published","title":"In IoTivity through 1.3.1, the CoAP server interface can be used for Distributed Denial of...","description":"In IoTivity through 1.3.1, the CoAP server interface can be used for Distributed Denial of Service attacks using source IP address spoofing and UDP-based traffic amplification. The reflected traffic is 6 times bigger than spoofed requests. This occurs because the construction of a \"4.01 Unauthorized\" response is mishandled. NOTE: the vendor states \"While this is an interesting attack, there is no plan for maintainer to fix, as we are migrating to IoTivity Lite.\"","severity":{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0133,"percentile":0.71251,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2019-03-13T19:00:00Z","modified":"2026-10-24T10:30:38Z","products":[{"vendor":"iotivity","product":"iotivity"}],"references":[{"url":"https://jira.iotivity.org/browse/IOT-3267","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-9750"},{"url":"https://github.com/advisories/GHSA-8vwf-phwx-jwqp"}],"sources":{"cve":[{"id":"CVE-2019-9750","description":"In IoTivity through 1.3.1, the CoAP server interface can be used for Distributed Denial of Service attacks using source IP address spoofing and UDP-based traffic amplification. The reflected traffic is 6 times bigger than spoofed requests. This occurs because the construction of a \"4.01 Unauthorized\" response is mishandled. NOTE: the vendor states \"While this is an interesting attack, there is no plan for maintainer to fix, as we are migrating to IoTivity Lite.\"","status":"published","published":"2019-03-13T19:00:00Z","modified":"2024-09-16T20:12:10.694Z","updated_at":"2026-11-02T14:20:20.397093Z"}],"euvd":[{"id":"EUVD-2019-19113","description":"In IoTivity through 1.3.1, the CoAP server interface can be used for Distributed Denial of Service attacks using source IP address spoofing and UDP-based traffic amplification. The reflected traffic is 6 times bigger than spoofed requests. This occurs because the construction of a \"4.01 Unauthorized\" response is mishandled. NOTE: the vendor states \"While this is an interesting attack, there is no plan for maintainer to fix, as we are migrating to IoTivity Lite.\"","status":"published","published":"2019-03-13T19:00:00Z","modified":"2024-09-16T20:12:10Z","updated_at":"2026-11-03T00:55:16.297064Z"}],"ghsa":[{"id":"GHSA-8vwf-phwx-jwqp","title":"In IoTivity through 1.3.1, the CoAP server interface can be used for Distributed Denial of...","description":"In IoTivity through 1.3.1, the CoAP server interface can be used for Distributed Denial of Service attacks using source IP address spoofing and UDP-based traffic amplification. The reflected traffic is 6 times bigger than spoofed requests. This occurs because the construction of a \"4.01 Unauthorized\" response is mishandled. NOTE: the vendor states \"While this is an interesting attack, there is no plan for maintainer to fix, as we are migrating to IoTivity Lite.\"","status":"published","published":"2022-05-13T01:08:20Z","modified":"2023-02-01T05:03:13Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:50:02.204531Z"}],"nvd":[{"id":"CVE-2019-9750","description":"In IoTivity through 1.3.1, the CoAP server interface can be used for Distributed Denial of Service attacks using source IP address spoofing and UDP-based traffic amplification. The reflected traffic is 6 times bigger than spoofed requests. This occurs because the construction of a \"4.01 Unauthorized\" response is mishandled. NOTE: the vendor states \"While this is an interesting attack, there is no plan for maintainer to fix, as we are migrating to IoTivity Lite.\"","status":"published","published":"2019-03-13T19:29:00.347Z","modified":"2026-06-17T02:44:17Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:05:07.268578Z"}],"osv":[{"id":"CVE-2019-9750","description":"In IoTivity through 1.3.1, the CoAP server interface can be used for Distributed Denial of Service attacks using source IP address spoofing and UDP-based traffic amplification. The reflected traffic is 6 times bigger than spoofed requests. This occurs because the construction of a \"4.01 Unauthorized\" response is mishandled. NOTE: the vendor states \"While this is an interesting attack, there is no plan for maintainer to fix, as we are migrating to IoTivity Lite.\"","status":"published","published":"2019-03-13T19:29:00.347Z","modified":"2026-10-24T10:30:38.031803998Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:12.974481Z"}]}}