Advisory Published

CVE-2024-23327: Crash in proxy protocol when command type of LOCAL in Envoy

First published: Fri Feb 09 2024(Updated: )

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.

Credit: security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
Envoyproxy Envoy>=1.26.0<1.26.7
Envoyproxy Envoy>=1.27.0<1.27.3
Envoyproxy Envoy>=1.28.0<1.28.1
Envoyproxy Envoy>=1.29.0<1.29.1

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