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CVE-2024-39305

6.5 · MEDIUM

Envoy is a cloud-native, open source edge and service proxy.

Published Jul 1, 2024CWE-416EPSS 0.65%

Overview

CVE-2024-39305 is a medium-severity vulnerability. It was published on July 1, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Envoy is a cloud-native, open source edge and service proxy. Prior to versions 1.30.4, 1.29.7, 1.28.5, and 1.27.7. Envoy references already freed memory when route hash policy is configured with cookie attributes. Note that this vulnerability has been fixed in the open as the effect would be immediately apparent if it was configured. Memory allocated for holding attribute values is freed after configuration was parsed. During request processing Envoy will attempt to copy content of de-allocated memory into request cookie header. This can lead to arbitrary content of Envoy's memory to be sent to the upstream service or abnormal process termination. This vulnerability is fixed in Envoy versions v1.30.4, v1.29.7, v1.28.5, and v1.27.7. As a workaround, do not use cookie attributes in route action hash policy.

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/02a06681fbe0e039b1c7a9215257a7537eddb518GitHubgithub.com/envoyproxy/envoy/commit/50b384cb203a1f2894324cbae64b6d9bc44cce45GitHubgithub.com/envoyproxy/envoy/commit/99b6e525fb9f6f6f19a0425f779bc776f121c7e5GitHubgithub.com/envoyproxy/envoy/commit/b7f509607ad860fd6a63cde4f7d6f0197f9f63bbGitHubgithub.com/envoyproxy/envoy/security/advisories/GHSA-fp35-g349-h66fGitHubgithub.com/envoyproxy/envoy/commit/02a06681fbe0e039b1c7a9215257a7537eddb518GitHubgithub.com/envoyproxy/envoy/commit/50b384cb203a1f2894324cbae64b6d9bc44cce45GitHubgithub.com/envoyproxy/envoy/commit/99b6e525fb9f6f6f19a0425f779bc776f121c7e5GitHubgithub.com/envoyproxy/envoy/commit/b7f509607ad860fd6a63cde4f7d6f0197f9f63bbGitHubgithub.com/envoyproxy/envoy/security/advisories/GHSA-fp35-g349-h66f

How CyberStrike helps

Frequently asked questions

What is CVE-2024-39305?

CVE-2024-39305 is a medium-severity vulnerability. It was published on July 1, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-39305?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-39305?

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-2024-39305?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-39305 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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