{"id":"CVE-2019-0064","aliases":["EUVD-2019-0871","GHSA-6vpf-6mrv-x8cr"],"status":"published","title":"Junos OS: SRX5000 Series: flowd process crash due to receipt of specific TCP packet","description":"On SRX5000 Series devices, if 'set security zones security-zone \u003czone\u003e tcp-rst' is configured, the flowd process may crash when a specific TCP packet is received by the device and triggers a new session. The process restarts automatically. However, receipt of a constant stream of these TCP packets may result in an extended Denial of Service (DoS) condition on the device. This issue affects Juniper Networks Junos OS: 18.2R3 on SRX 5000 Series; 18.4R2 on SRX 5000 Series; 19.2R1 on SRX 5000 Series.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.01282,"percentile":0.70265,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2019-10-09T19:26:17Z","modified":"2026-06-17T02:07:38Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper networks","product":"junos os"}],"references":[{"url":"https://kb.juniper.net/JSA10963","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-0064"},{"url":"https://github.com/advisories/GHSA-6vpf-6mrv-x8cr"}],"sources":{"cve":[{"id":"CVE-2019-0064","title":"Junos OS: SRX5000 Series: flowd process crash due to receipt of specific TCP packet","description":"On SRX5000 Series devices, if 'set security zones security-zone \u003czone\u003e tcp-rst' is configured, the flowd process may crash when a specific TCP packet is received by the device and triggers a new session. The process restarts automatically. However, receipt of a constant stream of these TCP packets may result in an extended Denial of Service (DoS) condition on the device. This issue affects Juniper Networks Junos OS: 18.2R3 on SRX 5000 Series; 18.4R2 on SRX 5000 Series; 19.2R1 on SRX 5000 Series.","status":"published","published":"2019-10-09T19:26:17.743Z","modified":"2024-09-17T02:53:30.644Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:32:24.473448Z"}],"euvd":[{"id":"EUVD-2019-0871","description":"On SRX5000 Series devices, if 'set security zones security-zone \u003czone\u003e tcp-rst' is configured, the flowd process may crash when a specific TCP packet is received by the device and triggers a new session. The process restarts automatically. However, receipt of a constant stream of these TCP packets may result in an extended Denial of Service (DoS) condition on the device. This issue affects Juniper Networks Junos OS: 18.2R3 on SRX 5000 Series; 18.4R2 on SRX 5000 Series; 19.2R1 on SRX 5000 Series.","status":"published","published":"2019-10-09T19:26:17Z","modified":"2024-09-17T02:53:30Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:28:36.484067Z"}],"ghsa":[{"id":"GHSA-6vpf-6mrv-x8cr","title":"On SRX5000 Series devices, if 'set security zones security-zone \u003czone\u003e tcp-rst' is configured,...","description":"On SRX5000 Series devices, if 'set security zones security-zone \u003czone\u003e tcp-rst' is configured, the flowd process may crash when a specific TCP packet is received by the device and triggers a new session. The process restarts automatically. However, receipt of a constant stream of these TCP packets may result in an extended Denial of Service (DoS) condition on the device. This issue affects Juniper Networks Junos OS: 18.2R3 on SRX 5000 Series; 18.4R2 on SRX 5000 Series; 19.2R1 on SRX 5000 Series.","status":"published","published":"2022-05-24T16:58:13Z","modified":"2023-01-28T05:07:49Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:44:34.529278Z"}],"nvd":[{"id":"CVE-2019-0064","description":"On SRX5000 Series devices, if 'set security zones security-zone \u003czone\u003e tcp-rst' is configured, the flowd process may crash when a specific TCP packet is received by the device and triggers a new session. The process restarts automatically. However, receipt of a constant stream of these TCP packets may result in an extended Denial of Service (DoS) condition on the device. This issue affects Juniper Networks Junos OS: 18.2R3 on SRX 5000 Series; 18.4R2 on SRX 5000 Series; 19.2R1 on SRX 5000 Series.","status":"published","published":"2019-10-09T20:15:17.427Z","modified":"2026-06-17T02:07:38.64Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:05:31.019577Z"}]}}