Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, gRPC access loggers using listeners global scope can cause a use-after-free crash when the listener is drained. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, disable gRPC access log or stop listener update.
Weakness
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Envoy | Envoyproxy | 1.23.0 (including) | 1.23.12 (excluding) |
| Envoy | Envoyproxy | 1.24.0 (including) | 1.24.10 (excluding) |
| Envoy | Envoyproxy | 1.25.0 (including) | 1.25.9 (excluding) |
| Envoy | Envoyproxy | 1.26.0 (including) | 1.26.4 (excluding) |
| Red Hat OpenShift Service Mesh 2.3 for RHEL 8 | RedHat | openshift-service-mesh/proxyv2-rhel8:2.3.6-4 | * |
| Red Hat OpenShift Service Mesh 2.4 for RHEL 8 | RedHat | openshift-service-mesh/proxyv2-rhel8:2.4.3-7 | * |