GHSA-7774-7VR3-CC8J Authorization Policy Bypass Due to Case Insensitive Host Comparison

Impact According to RFC 4343, Istio authorization policy should compare the hostname in the HTTP Host header in a case insensitive way, but currently the comparison is case sensitive. The Envoy proxy will route the request hostname in a case-insensitive way which means the authorization policy...

Authorization Policy Bypass Due to Case Insensitive Host Comparison

Impact According to RFC 4343, Istio authorization policy should compare the hostname in the HTTP Host header in a case insensitive way, but currently the comparison is case sensitive. The Envoy proxy will route the request hostname in a case-insensitive way which means the authorization policy...

Denial Of Service (DoS)

servicemesh-proxy is vulnerable to denial of service. Envoy is configured with an RBAC filter for authorization or similar mechanism with an explicit case of a final "/admin" path element, or is using a negative assertion with final path element of "/admin". The client sends request to...

Authorization Bypass

servicemesh-proxy is vulnerable to authorization bypass. It allows specifically crafted requests to bypass authorization. Attackers may be able to escalate privileges when using ext-authz extension or back end service that uses multiple value headers for authorization. A specifically constructed...

envoyproxy/envoy: HTTP request with multiple value headers can bypass authorization policies

An authorization bypass vulnerability was found in envoyproxy/envoy. Envoy incorrectly evaluates an HTTP request with multiple value headers. This flaw allows an attacker to bypass rule policies that use the extauthz extension. The highest threat from this vulnerability is to confidentiality,...

envoyproxy/envoy: denial of service when using extensions that modify request or response sizes

An out-of-bounds memory read vulnerability was found in envoyproxy/envoy. When using one of the following envoy extensions, it is possible to modify and increase the request or response body size of the following: the decompressor, json-transcoder, grpc-web, or other proprietary extensions. This...

envoyproxy/envoy: HTTP request with a URL fragment in the URI can bypass authorization policies

An authorization bypass vulnerability was found in envoyproxy/envoy. When a URI path-based authorization policy is specified, envoy incorrectly evaluates the HTTP request which contains a URI fragment. This flaw allows an attacker to bypass the authorization policy and access downstream services...

envoyproxy/envoy: HTTP request with a URL fragment in the URI can bypass authorization policies

An authorization bypass vulnerability was found in envoyproxy/envoy. When a URI path-based authorization policy is specified, envoy incorrectly evaluates the HTTP request which contains a URI fragment. This flaw allows an attacker to bypass the authorization policy and access downstream services...

envoyproxy/envoy: HTTP request with multiple value headers can bypass authorization policies

An authorization bypass vulnerability was found in envoyproxy/envoy. Envoy incorrectly evaluates an HTTP request with multiple value headers. This flaw allows an attacker to bypass rule policies that use the extauthz extension. The highest threat from this vulnerability is to confidentiality,...

envoyproxy/envoy: denial of service when using extensions that modify request or response sizes

An out-of-bounds memory read vulnerability was found in envoyproxy/envoy. When using one of the following envoy extensions, it is possible to modify and increase the request or response body size of the following: the decompressor, json-transcoder, grpc-web, or other proprietary extensions. This...

RHEL 8 : Red Hat OpenShift Service Mesh 2.0.7.1 (RHSA-2021:3272)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3272 advisory. Red Hat OpenShift Service Mesh is Red Hat's distribution of the Istio service mesh project, tailored for installation into an on-premise...

RHEL 8 : Red Hat OpenShift Service Mesh 1.1.17.1 (RHSA-2021:3273)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3273 advisory. Red Hat OpenShift Service Mesh is Red Hat's distribution of the Istio service mesh project, tailored for installation into an on-premise...

CVE-2021-32777

An authorization bypass vulnerability was found in envoyproxy/envoy. Envoy incorrectly evaluates an HTTP request with multiple value headers. This flaw allows an attacker to bypass rule policies that use the extauthz extension. The highest threat from this vulnerability is to confidentiality,...

CVE-2021-32781

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions after Envoy sends a locally generated response it must stop further processing of request or response data. However when local response is generated due the intern...

CVE-2021-32781

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions after Envoy sends a locally generated response it must stop further processing of request or response data. However when local response is generated due the intern...

CVE-2021-32780

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions Envoy transitions a H/2 connection to the CLOSED state when it receives a GOAWAY frame without any streams outstanding. The connection state is transitioned to...

CVE-2021-32780

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions Envoy transitions a H/2 connection to the CLOSED state when it receives a GOAWAY frame without any streams outstanding. The connection state is transitioned to...

CVE-2021-32778

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions envoy’s procedure for resetting a HTTP/2 stream has ON^2 complexity, leading to high CPU utilization when a large number of streams are reset. Deployments are...

CVE-2021-32779

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions envoy incorrectly handled a URI 'fragment' element as part of the path element. Envoy is configured with an RBAC filter for authorization or similar mechanism with...

CVE-2021-32779

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions envoy incorrectly handled a URI 'fragment' element as part of the path element. Envoy is configured with an RBAC filter for authorization or similar mechanism with...