CVE-2021-39206

moderate-risk
Published 2021-09-09

Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, contains two authorization related vulnerabilities CVE-2021-32777 and CVE-2021-32779. This may lead to incorrect routing or authorization policy decisions. With specially crafted requests, incorrect authorization or routing decisions may be made by Pomerium. Pomerium v0.14.8 and v0.15.1 contain an upgraded envoy binary with these vulnerabilities patched. This issue can only be triggered when using path prefix based policy. Removing any such policies should provide mitigation.

Do I need to act?

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0.16% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.6/10 High
NETWORK / LOW complexity

Affected Products (4)

Pomerium
Pomerium

Affected Vendors

Envoyproxy Pomerium

References (8)

Third Party Advisory https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h
Third Party Advisory https://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9
Third Party Advisory https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fm
Not Applicable https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ
Third Party Advisory https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h
Third Party Advisory https://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9
Third Party Advisory https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fm
Not Applicable https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ
40
/ 100
moderate-risk
Severity 29/34 · Critical
Exploitability 1/34 · Minimal
Exposure 10/34 · Low