CVE-2025-30157

MEDIUM6.5

Envoy crashes when HTTP ext_proc processes local replies

Published Mar 21, 2025

Modified 11 months ago

Details

Envoy is a cloud-native high-performance edge/middle/service proxy. Prior to 1.33.1, 1.32.4, 1.31.6, and 1.30.10, Envoy's ext_proc HTTP filter is at risk of crashing if a local reply is sent to the external server due to the filter's life time issue. A known situation is the failure of a websocket handshake will trigger a local reply leading to the crash of Envoy. This vulnerability is fixed in 1.33.1, 1.32.4, 1.31.6, and 1.30.10.

References

WEB

https://github.com/envoyproxy/envoy/commit/8eda1b8ef5ba8663d16a737ab99458c039a9b53c

DETECTION

https://github.com/envoyproxy/envoy/security/advisories/GHSA-cf3q-gqg7-3fm9

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2025-30157

CVSS Analysis

CVSS v3.1

6.5

Exploitability

Attack Vector