High severity7.5NVD Advisory· Published Feb 9, 2024· Updated Jun 17, 2026
CVE-2024-23327
CVE-2024-23327
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.
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Affected products
4>= 1.29.0, < 1.29.1+ 2 more
- (no CPE)range: >= 1.29.0, < 1.29.1
- (no CPE)range: before 1.29.1, 1.28.1, 1.27.3, 1.26.7
- cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*range: >=1.26.0,<1.26.7
Patches
Vulnerability mechanics
References
2- github.com/envoyproxy/envoy/commit/63895ea8e3cca9c5d3ab4c5c128ed1369969d54anvdPatchThird Party Advisory
- github.com/envoyproxy/envoy/security/advisories/GHSA-4h5x-x9vh-m29jnvdThird Party Advisory
News mentions
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