Description
Envoy is an open source edge and service proxy, designed for cloud-native applications. The envoy common router will segfault if an internal redirect selects a route configured with direct response or redirect actions. This will result in a denial of service. As a workaround turn off internal redirects if direct response entries are configured on the same listener.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- envoyproxy / envoy< 1.18.6 – < 1.18.6
- envoyproxy / envoy>= 1.19.0, < 1.19.3 – >= 1.19.0, < 1.19.3
- envoyproxy / envoy>= 1.20.0, < 1.20.2 – >= 1.20.0, < 1.20.2
- envoyproxy / envoy>= 1.21.0, < 1.21.1 – >= 1.21.0, < 1.21.1