CVE-2024-23327

CVSS 3.1 Score 7.5 of 10 (high)

Details

Published Feb 9, 2024
Updated: Feb 15, 2024
CWE ID 476

Summary

CVE-2024-23327 is a vulnerability affecting Envoy, a high-performance proxy. When the PPv2 feature is enabled on both a listener and subsequent cluster, an Envoy instance will encounter a segmentation fault while trying to create the upstream PPv2 header. This issue occurs when a downstream request has a command type of LOCAL but lacks the protocol block. The vulnerability has been addressed in releases 1.29.1, 1.28.1, 1.27.3, and 1.26.7, therefore users are advised to upgrade their Envoy versions to mitigate the risk. There are no known workarounds for this vulnerability, and it is rated as HIGH severity with an exploitability score of 3.9 and a base score of 7.5 according to NIST's CVSS v3.1 framework. The potential danger this vulnerability poses to organizations is the possibility of attackers exploiting it remotely over the network, resulting in high availability impact on affected systems.

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