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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub_MCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVEADP
---
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Base Score
CVSS 3.x
EPSS Score
Percentile: 60%
VendorProductVersion
envoyproxyenvoy
𝑥
≤ 1.16.4
envoyproxyenvoy
1.17.0 ≤
𝑥
< 1.17.4
envoyproxyenvoy
1.18.0 ≤
𝑥
< 1.18.4
envoyproxyenvoy
1.19.0
pomeriumpomerium
𝑥
< 0.14.8
pomeriumpomerium
0.15.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chcc
https://github.com/pomerium/pomerium/security/advisories/GHSA-5wjf-62hw-q78r
https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ
https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chcc
https://github.com/pomerium/pomerium/security/advisories/GHSA-5wjf-62hw-q78r
https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ