{"id":"CVE-2022-2529","aliases":["EUVD-2022-7068","GHSA-9rpw-2h95-666c","GO-2022-1032"],"status":"published","title":"Multiple DoS Attack Vectors in sflow packet handling","description":"sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service.","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":"2026-11-09","score":0.00971,"percentile":0.62167,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-400"],"published":"2022-09-30T10:45:11Z","modified":"2026-10-28T02:31:14Z","fixes":[{"ecosystem":"Go","package":"github.com/cloudflare/goflow/v3","fixed_in":["3.4.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/cloudflare/goflow/v3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.4"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cloudflare/goflow/v3","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.4.4"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cloudflare/goflow","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cloudflare/goflow/v3","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.4.4"}]}]}],"products":[{"vendor":"cloudflare","product":"goflow"}],"references":[{"url":"https://github.com/cloudflare/goflow/security/advisories/GHSA-9rpw-2h95-666c","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-2529","tags":["advisory"]},{"url":"https://github.com/cloudflare/goflow/commit/2b94619a6204443e3ca1769f4e459f9f57039c51","tags":["web","fix"]},{"url":"https://github.com/cloudflare/goflow/commit/c829ccd2c0aafdc9b886b20bf6f28095607f4998","tags":["web","fix"]},{"url":"https://github.com/cloudflare/goflow/releases/tag/v3.4.4","tags":["web"]},{"url":"https://github.com/advisories/GHSA-9rpw-2h95-666c"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/2xxx/CVE-2022-2529.json","tags":["advisory"]},{"url":"https://github.com/cloudflare/goflow","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-2529","title":"Multiple DoS Attack Vectors in sflow packet handling","description":"sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service.","status":"published","published":"2022-09-30T10:45:11Z","modified":"2025-05-20T16:03:07.474Z","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"}],"cwes":["CWE-20","CWE-400"],"updated_at":"2026-11-02T14:34:32.495407Z"}],"euvd":[{"id":"EUVD-2022-7068","description":"sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service.","status":"published","published":"2022-09-30T10:45:11Z","modified":"2025-05-20T16:03:07Z","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":"2026-11-02T20:32:43.363755Z"}],"ghsa":[{"id":"GHSA-9rpw-2h95-666c","title":"Cloudflare GoFlow vulnerable to a Denial of Service in the sflow packet handling package","description":"### Impact\nThe sflow decode package prior to version 3.4.4 does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume huge amounts of memory resulting in a denial of service.\n\n### Specific Go Packages Affected\ngithub.com/cloudflare/goflow/v3/decoders/sflow\n\n### Patches\nVersion 3.4.4 contains patches fixing this.\n\n### Workarounds\nA possible workaround is to not have your goflow collector publicly reachable.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [goflow repo](https://github.com/cloudflare/goflow)\n* Email us [netdev[@]cloudflare.com ](mailto:netdev@cloudflare.com)\n","status":"published","published":"2022-10-01T15:52:23Z","modified":"2023-10-02T11:20:15Z","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"}],"cwes":["CWE-20","CWE-400"],"updated_at":"2026-11-02T14:37:06.913882Z"}],"nvd":[{"id":"CVE-2022-2529","description":"sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service.","status":"published","published":"2022-09-30T11:15:09.353Z","modified":"2026-06-17T04:42:04.037Z","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"}],"cwes":["CWE-20","CWE-400"],"updated_at":"2026-11-02T14:07:29.026521Z"}],"osv":[{"id":"CVE-2022-2529","title":"Multiple DoS Attack Vectors in sflow packet handling","description":"sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service.","status":"published","published":"2022-09-30T10:45:11Z","modified":"2026-10-28T02:31:14.06059893Z","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"}],"cwes":["CWE-20","CWE-400"],"updated_at":"2026-11-02T15:44:24.428403Z"},{"id":"GHSA-9rpw-2h95-666c","title":"Cloudflare GoFlow vulnerable to a Denial of Service in the sflow packet handling package","description":"### Impact\nThe sflow decode package prior to version 3.4.4 does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume huge amounts of memory resulting in a denial of service.\n\n### Specific Go Packages Affected\ngithub.com/cloudflare/goflow/v3/decoders/sflow\n\n### Patches\nVersion 3.4.4 contains patches fixing this.\n\n### Workarounds\nA possible workaround is to not have your goflow collector publicly reachable.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [goflow repo](https://github.com/cloudflare/goflow)\n* Email us [netdev[@]cloudflare.com ](mailto:netdev@cloudflare.com)\n","status":"published","published":"2022-10-01T15:52:23Z","modified":"2026-07-08T06:30:05.372377259Z","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"}],"cwes":["CWE-20","CWE-400"],"updated_at":"2026-11-02T15:46:44.225359Z"},{"id":"GO-2022-1032","title":"Cloudflare GoFlow vulnerable to a Denial of Service in the sflow packet handling package in github.com/cloudflare/goflow","description":"Cloudflare GoFlow vulnerable to a Denial of Service in the sflow packet handling package in github.com/cloudflare/goflow","status":"published","published":"2024-08-21T16:03:24Z","modified":"2026-03-03T04:52:37.50143Z","updated_at":"2026-11-02T15:47:00.918515Z"}]}}