Vulnerability · Published Sep 9, 2021 · Assigned by GitHub_M

CVE-2021-39204Excessive CPU usage in Pomerium

High 7.5

In plain English

A high-severity security flaw in pomerium from pomerium. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)1.7%top 23.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/pomerium/pomerium	0.14.8	GHSA-5wjf-62hw-q78r
Go	github.com/pomerium/pomerium	0.15.1	GHSA-5wjf-62hw-q78r

Affected products (as reported)

Vendor	Product	Versions
pomerium	pomerium	< 0.14.8>= 0.15.0, < 0.15.1

Weakness: CWE-834 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ x_refsource_MISC
https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chcc x_refsource_MISC
https://github.com/pomerium/pomerium/security/advisories/GHSA-5wjf-62hw-q78r x_refsource_CONFIRM