Unrated severityNVD Advisory· Published Feb 9, 2024· Updated Jun 9, 2025
Crash in proxy protocol when command type of LOCAL in Envoy
CVE-2024-23327
Description
Envoy is a high-performance edge/middle/service proxy. When PPv2 is enabled both on a listener and subsequent cluster, the Envoy instance will segfault when attempting to craft the upstream PPv2 header. This occurs when the downstream request has a command type of LOCAL and does not have the protocol block. This issue has been addressed in releases 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.
Affected products
1- Range: >= 1.29.0, < 1.29.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- github.com/envoyproxy/envoy/commit/63895ea8e3cca9c5d3ab4c5c128ed1369969d54amitrex_refsource_MISC
- github.com/envoyproxy/envoy/security/advisories/GHSA-4h5x-x9vh-m29jmitrex_refsource_CONFIRM
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