{"id":"GHSA-5wjf-62hw-q78r","summary":"Excessive CPU usage","details":"Envoy, which Pomerium is based on, incorrectly handles resetting of HTTP/2 streams with excessive complexity.  This can lead to high CPU utilization when a large number of streams are reset.  \n\n### Impact\n\nThis can result in a DoS condition.\n\n### Patches\nPomerium versions 0.14.8 and 0.15.1 contain an upgraded envoy binary with this vulnerability patched.\n\n### Workarounds\nN/A\n\n### References\n[envoy GSA](https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chcc)\n[envoy CVE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32778)\n[envoy announcement](https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [pomerium/pomerium](https://github.com/pomerium/pomerium/issues)\n* Email us at [security@pomerium.com](mailto:security@pomerium.com)\n","aliases":["BIT-envoy-2021-39204","CVE-2021-39204"],"modified":"2026-01-30T01:23:40.318410Z","published":"2021-09-10T17:54:13Z","related":["CVE-2021-39204"],"database_specific":{"cwe_ids":["CWE-834"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2021-09-10T16:33:46Z","nvd_published_at":"2021-09-09T22:15:00Z"},"references":[{"type":"WEB","url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chcc"},{"type":"WEB","url":"https://github.com/pomerium/pomerium/security/advisories/GHSA-5wjf-62hw-q78r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39204"},{"type":"PACKAGE","url":"https://github.com/pomerium/pomerium"},{"type":"WEB","url":"https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ"}],"affected":[{"package":{"name":"github.com/pomerium/pomerium","ecosystem":"Go","purl":"pkg:golang/github.com/pomerium/pomerium"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.14.8"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/09/GHSA-5wjf-62hw-q78r/GHSA-5wjf-62hw-q78r.json"}},{"package":{"name":"github.com/pomerium/pomerium","ecosystem":"Go","purl":"pkg:golang/github.com/pomerium/pomerium"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.15.0"},{"fixed":"0.15.1"}]}],"versions":["0.15.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/09/GHSA-5wjf-62hw-q78r/GHSA-5wjf-62hw-q78r.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}