CVSS 3.1 Score 7.5 of 10 (high)


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


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.


Explore Beyond the CVE Basics with Recorded Future's Vulnerability Intelligence

Note: This is just a basic overview providing quick insights into CVE-2024-23327 information. Gain full access to comprehensive CVE data, risk scores, prioritization, and mitigation data through Recorded Future's Vulnerability Intelligence:
  • Prioritize with Risk-Based Scoring
  • Explore the Extensive Vulnerability Database
  • Receive Early Alerts on Emerging CVEs
  • Focus on Critical Exploitable Vulnerabilities
  • Streamline Remediation with Integration Options