CVE-2021-39206 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Reference

https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fm https://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

8.6