Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the Lua filter is vulnerable to denial of service. Attackers can send large request bodies for routes that have Lua filter enabled and trigger crashes.
As of versions versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, Envoy no longer invokes the Lua coroutine if the filter has been reset. As a workaround for those whose Lua filter is buffering all requests/ responses, mitigate by using the buffer filter to avoid triggering the local reply in the Lua filter.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| envoyproxy | envoy | >= 1.25.0, < 1.25.3, >= 1.24.0, < 1.24.4, >= 1.23.0, < 1.23.6, < 1.22.9 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | ecs-service-connect-agent | v1.25.4.0-1.amzn2023 | ALAS2023-2023-165 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | istio +1 | 1.15.7-1.el8 | ELSA-2023-12356, ELSA-2023-12354 |
| Oracle Linux 8 | kubeadm +2 | 1.24.8-2.el8 | ELSA-2023-12356, ELSA-2023-12354 |
| Oracle Linux 8 | olcne-rook-chart +4 | 1.6.1-9.el8 | ELSA-2023-23648, ELSA-2023-12354 |
| Oracle Linux 8 | olcnectl +11 | 1.5.12-6.el8 | ELSA-2023-12356, ELSA-2023-12354 |
| Oracle Linux 7 | istio +1 | 1.15.7-1.el7 | ELSA-2023-12357, ELSA-2023-12355 |
| Oracle Linux 7 | kubeadm +2 | 1.24.8-2.el7 | ELSA-2023-12357, ELSA-2023-12355 |
| Oracle Linux 7 | olcne-rook-chart +4 | 1.6.1-9.el7 | ELSA-2023-23649, ELSA-2023-12355 |
| Oracle Linux 7 | olcnectl +11 | 1.5.12-6.el7 | ELSA-2023-12357, ELSA-2023-12355 |
Advisories 8
- WID-SEC-2023-2058 Red Hat OpenShift Service Mesh und Service Mesh Containers: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 8, 2023
- ELSA-2023-23649 Important: olcne security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 2, 2023
- ELSA-2023-12356 Important: istio security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 2, 2023
- ELSA-2023-23648 Important: olcne security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 2, 2023
- ELSA-2023-12354 Important: istio security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 2, 2023
- ELSA-2023-12357 Important: istio security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 2, 2023
- ELSA-2023-12355 Important: istio security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 2, 2023
- ALAS2023-2023-165 Important: ecs-service-connect-agent security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · May 3, 2023