Vulnerability Description
Pomerium is an open source identity-aware access proxy. 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. This can result in a DoS condition. Pomerium versions 0.14.8 and 0.15.1 contain an upgraded envoy binary with this vulnerability patched.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Envoyproxy | Envoy | <= 1.16.4 |
| Pomerium | Pomerium | < 0.14.8 |
Related Weaknesses (CWE)
References
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chccThird Party Advisory
- https://github.com/pomerium/pomerium/security/advisories/GHSA-5wjf-62hw-q78rThird Party Advisory
- https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJNot Applicable
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chccThird Party Advisory
- https://github.com/pomerium/pomerium/security/advisories/GHSA-5wjf-62hw-q78rThird Party Advisory
- https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJNot Applicable
FAQ
What is CVE-2021-39204?
CVE-2021-39204 is a vulnerability with a CVSS score of 7.5 (HIGH). Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, incorrectly handles resetting of HTTP/2 streams with excessive complexity. This can lead to high CPU utilizat...
How severe is CVE-2021-39204?
CVE-2021-39204 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-39204?
Check the references section above for vendor advisories and patch information. Affected products include: Envoyproxy Envoy, Pomerium Pomerium.