CVE-2024-39305 Information

Description

Envoy is a cloud-native open source edge and service proxy. Prior to versions 1.30.4 1.29.7 1.28.5 and 1.27.7. Envoy references already freed memory when route hash policy is configured with cookie attributes. Note that this vulnerability has been fixed in the open as the effect would be immediately apparent if it was configured. Memory allocated for holding attribute values is freed after configuration was parsed. During request processing Envoy will attempt to copy content of de-allocated memory into request cookie header. This can lead to arbitrary content of Envoy’s memory to be sent to the upstream service or abnormal process termination. This vulnerability is fixed in Envoy versions v1.30.4 v1.29.7 v1.28.5 and v1.27.7. As a workaround do not use cookie attributes in route action hash policy.

Reference

https://github.com/envoyproxy/envoy/security/advisories/GHSA-fp35-g349-h66f https://github.com/envoyproxy/envoy/commit/02a06681fbe0e039b1c7a9215257a7537eddb518 https://github.com/envoyproxy/envoy/commit/50b384cb203a1f2894324cbae64b6d9bc44cce45 https://github.com/envoyproxy/envoy/commit/99b6e525fb9f6f6f19a0425f779bc776f121c7e5 https://github.com/envoyproxy/envoy/commit/b7f509607ad860fd6a63cde4f7d6f0197f9f63bb