VulnerabilityModified
CVE-2021-39204
Pomerium versions 0.14.8 and 0.15.1 contain an upgraded envoy binary with this vulnerability patched.
HIGH 7.5EPSS 1.66%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.66% probability · 75th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-834
- Affected
- envoyproxy/envoy · pomerium/pomerium
- Source
- security-advisories@github.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.