CVE-2024-23327

Crash in proxy protocol when command type of LOCAL in Envoy

State: Published
Severity: 7.5 High
Published: Feb 9, 2024
Updated: Jun 9, 2025
Reserved: Jan 15, 2024

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
envoyenvoyproxy	>= 1.29.0, < 1.29.1Affected >= 1.28.0, < 1.28.1Affected >= 1.27.0, < 1.27.3Affected < 1.26.7Affected

References

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