Home/CVE/Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, contains two authorization re
CVE

CVE-2021-39206

Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, contains two authorization re

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.

HIGH · CVSS 8.6 EPSS 0.00162
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-863Incorrect Authorization
▤

Affected Products & Versions

6
envoyproxy envoy< 1.16.5
envoyproxy envoy>= 1.17.0 and < 1.17.4
envoyproxy envoy>= 1.18.0 and < 1.18.4
envoyproxy envoyall versions
pomerium>= 0.11.0 and < 0.14.8
pomeriumall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go github.com/pomerium/pomerium HIGH fixed in 0.14.8
▣

Scoring & Timeline

8.6
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Sep 2021 · 11:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8hThird Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9Third Party Advisory
https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fmThird Party Advisory
https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJNot Applicable
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