Excessive CPU usage in Pomerium
CVE-2021-39204

7.5HIGH

Key Information:

Vendor

Pomerium

Status
Pomerium
Vendor
CVE Published:
9 September 2021

What is CVE-2021-39204?

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.

Affected Version(s)

pomerium < 0.14.8 < 0.14.8

pomerium >= 0.15.0, < 0.15.1 < 0.15.0, 0.15.1

References

https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/...
x_refsource_MISC
https://github.com/envoyproxy/envoy/security/advisories/G...
x_refsource_MISC
https://github.com/pomerium/pomerium/security/advisories/...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.