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, Envoy does not sanitize or escape request properties when generating request headers. This can lead to characters that are illegal in header values to be sent to the upstream service. In the worst case, it can cause upstream service to interpret the original request as two pipelined requests, possibly bypassing the intent of Envoy’s security policy. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. As a workaround, disable adding request headers based on the downstream request properties, such as downstream certificate properties.
CVSS Details
- CVSS 3.1 Base Score: 8.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade ecs-service-connect-agent-debuginfoUpgrade ecs-service-connect-agent | Jul 14, 2023 | Apr 4, 2023 |
| Amazon_linux_2023 | — | Upgrade ecs-service-connect-agent | Feb 17, 2025 | Apr 4, 2023 |
| Oracle_linux | — | Upgrade olcne-istio-chartUpgrade istioUpgrade olcne-agentUpgrade olcne-metallb-chartUpgrade olcne-utilsUpgrade olcne-api-serverUpgrade olcne-rook-chartUpgrade istio-istioctlUpgrade olcne-prometheus-chartUpgrade olcne-grafana-chartUpgrade olcne-kubevirt-chartUpgrade olcne-calico-chartUpgrade kubeletUpgrade olcne-olm-chartUpgrade olcnectlUpgrade kubeadmUpgrade olcne-multus-chartUpgrade kubectlUpgrade olcne-extra-modulesUpgrade olcne-gluster-chartUpgrade olcne-oci-ccm-chartUpgrade olcne-nginx | Jun 2, 2023 | Apr 4, 2023 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub