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-2021-32777

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However,...

CVE-2021-32777

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However,...

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...

Code injection

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-2021-32777

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However,...

Authorization

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However,...

Path traversal

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...

Design/Logic Flaw

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-2021-32781

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...

Buffer overflow

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 Incorrect handling of H/2 GOAWAY followed by SETTINGS frames

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

CVE-2021-32780 affects Envoy. A sequence of HTTP/2 GOAWAY followed by SETTINGS (SETTINGS_MAX_CONCURRENT_STREAMS=0) frames can trigger an invalid state transition from CLOSED to DRAINING, causing abnormal termination and DoS in the presence of untrusted upstream servers. Affected Envoy versions in...

CVE-2021-32781

CVE-2021-32781 affects Envoy, a open-source L7 proxy. The vulnerability arises during processing after a locally generated response, where an internal buffer overflow can prevent stopping request/response processing, potentially allowing access to freed memory. Affected Envoy versions include 1.1...

CVE-2021-32781 Continued processing of requests after locally generated response

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-2021-32779

CVE-2021-32779 affects Envoy, where a URI with a '#fragment' can be misinterpreted as part of the path. In affected Envoy releases prior to 1.18.0, or 1.18.0+ with path_normalization=false, the fragment may be treated as a path suffix (e.g., /admin#foo) and fail path checks, potentially leaking t...

CVE-2021-32779 Incorrectly handling of URI '#fragment' element as part of the path element

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-2021-32778

CVE-2021-32778 affects Envoy, where the HTTP/2 stream reset procedure has O(N^2) time complexity, causing high CPU and potential DoS when many streams are opened and closed. Connected advisories indicate fixes in Envoy versions 1.16.5, 1.17.4, 1.18.4, and 1.19.1, addressing the inefficiency. Othe...

CVE-2021-32778 Excessive CPU utilization when closing HTTP/2 streams

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...