CVE-2021-39204

Excessive CPU usage in Pomerium

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.41%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: pomerium pomerium
Published at:
Updated at:

References

Link Tags
https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ not applicable
https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chcc third party advisory
https://github.com/pomerium/pomerium/security/advisories/GHSA-5wjf-62hw-q78r third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-39204?
CVE-2021-39204 has been scored as a high severity vulnerability.
How to fix CVE-2021-39204?
To fix CVE-2021-39204, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-39204 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-39204 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39204?
CVE-2021-39204 affects pomerium pomerium.
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