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CVE-2024-23327

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CVE-2024-23327

Published: Feb 9, 2024

Modified: Jun 9, 2025

PUBLISHED

CVSS v3.1

7.5

HIGH

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.

VendorProductVersions

envoyproxy

envoy

affected
>= 1.29.0, < 1.29.1
affected
>= 1.28.0, < 1.28.1
affected
>= 1.27.0, < 1.27.3
affected
< 1.26.7

Weaknesses (CWE)

CWE-476

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

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