CVE-2021-39206

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.

How to fix CVE-2021-39206

To remediate CVE-2021-39206, upgrade the affected package to a fixed version below.

• —upgrade to 1.16.5 or later
• —upgrade to 0.14.8 or later

Is CVE-2021-39206 being exploited?

Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 1.16.5, >= 1.17.0, < 1.17.4, >= 1.18.0, < 1.18.4, >= 1.19.0, < 1.19.1
• >= 0.11.0, < 0.14.8

CVSS scores

References (6)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-39206
• PATCHgithub.com/pomerium/pomerium
• WEBgithub.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h
• WEBgithub.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9