CVE-2021-39206

Incorrect Authorization with specially crafted requests

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.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.16%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: pomerium pomerium
Published at:
Updated at:

References

Link Tags
https://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9 third party advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h third party advisory
https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ not applicable
https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fm third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-39206?
CVE-2021-39206 has been scored as a high severity vulnerability.
How to fix CVE-2021-39206?
To fix CVE-2021-39206, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-39206 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-39206 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39206?
CVE-2021-39206 affects pomerium pomerium.
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