# CVE-2024-23323: ecs-service-connect-agent: Envoy is a high-performance edge/middle/service proxy

CVE-2024-23323 is fixed in ecs-service-connect-agent on 1 platform by ALAS2023-2024-543 (version v1.27.3.0-1.amzn2023), released February 29, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-23323
- Priority: High
- CVSS: n/a (important)
- EPSS: 0.0050
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 29, 2024

## Description

Envoy is a high-performance edge/middle/service proxy. The regex expression is compiled for every request and can result in high CPU usage and increased request latency when multiple routes are configured with such matchers. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ecs-service-connect-agent amzn 2023 | v1.27.3.0-1.amzn2023 | [ALAS2023-2024-543](https://patchblox.com/security/data/fix/linux/alas2023-2024-543.md) | Feb 29, 2024 |

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Data as of 2026-11-11T13:47:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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