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CVE-2022-29227

7.5 · HIGH

Envoy is a cloud-native high-performance edge/middle/service proxy.

Published Jun 9, 2022CWE-416EPSS 1.25%

Overview

CVE-2022-29227 is a high-severity vulnerability. It was published on June 9, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Envoy is a cloud-native high-performance edge/middle/service proxy. In versions prior to 1.22.1 if Envoy attempts to send an internal redirect of an HTTP request consisting of more than HTTP headers, there’s a lifetime bug which can be triggered. If while replaying the request Envoy sends a local reply when the redirect headers are processed, the downstream state indicates that the downstream stream is not complete. On sending the local reply, Envoy will attempt to reset the upstream stream, but as it is actually complete, and deleted, this result in a use-after-free. Users are advised to upgrade. Users unable to upgrade are advised to disable internal redirects if crashes are observed.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/envoyproxy/envoy/commit/fe7c69c248f4fe5a9080c7ccb35275b5218bb5abGitHubgithub.com/envoyproxy/envoy/security/advisories/GHSA-rm2p-qvf6-pvr6GitHubgithub.com/envoyproxy/envoy/commit/fe7c69c248f4fe5a9080c7ccb35275b5218bb5abGitHubgithub.com/envoyproxy/envoy/security/advisories/GHSA-rm2p-qvf6-pvr6

How CyberStrike helps

Frequently asked questions

What is CVE-2022-29227?

CVE-2022-29227 is a high-severity vulnerability. It was published on June 9, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2022-29227?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-29227?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-29227?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-29227 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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