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 DRAINING when it receives a SETTING frame with the SETTINGS_MAX_CONCURRENT_STREAMS parameter set to 0. Receiving these two frames in the same I/O event results in abnormal termination of the Envoy process due to invalid state transition from CLOSED to DRAINING. A sequence of H/2 frames delivered by an untrusted upstream server will result in Denial of Service in the presence of untrusted **upstream** servers. Envoy versions 1.19.1, 1.18.4 contain fixes to stop processing of pending H/2 frames after connection transition to the CLOSED state.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9546 advisory.

    - Update Kubernetes version to 1.20.11 to address CVE-2021-25741
    - Update Istio to 1.9.8, 1.10.4 to address CVE-2021-32777, CVE-2021-32778, CVE-2021-32779, CVE-2021-32780     & CVE-2021-32781
    - Bump release, addresses the following envoy CVEs,       CVE-2021-32777, CVE-2021-32778, CVE-2021-32779, CVE-2021-32780 & CVE-2021-32781
    - Bump release, addresses the following envoy CVEs,       CVE-2021-32777, CVE-2021-32778, CVE-2021-32779, CVE-2021-32780 & CVE-2021-32781
    - Bump release for CVE fix, addresses CVE-2021-25741

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9525 advisory.

    - Update Istio to 1.9.8 to address CVE-2021-32777, CVE-2021-32778, CVE-2021-32779, CVE-2021-32780 &     CVE-2021-32781
    - Bump release, addresses the following envoy CVEs,       CVE-2021-32777, CVE-2021-32778, CVE-2021-32779, CVE-2021-32780 & CVE-2021-32781

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9526 advisory.

    - Update Kubernetes version to 1.20.11 to address CVE-2021-25741
    - Update Istio to 1.9.8, 1.10.4 to address CVE-2021-32777, CVE-2021-32778, CVE-2021-32779, CVE-2021-32780     & CVE-2021-32781
    - Bump release, addresses the following envoy CVEs,       CVE-2021-32777, CVE-2021-32778, CVE-2021-32779, CVE-2021-32780 & CVE-2021-32781
    - Bump release, addresses the following envoy CVEs,       CVE-2021-32777, CVE-2021-32778, CVE-2021-32779, CVE-2021-32780 & CVE-2021-32781
    - Bump release for CVE fix, addresses CVE-2021-25741

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
155011	Oracle Linux 8 : olcne / istio / istio / kubernetes (ELSA-2021-9546)	Nessus	Oracle Linux Local Security Checks	high
154971	Oracle Linux 7 / 8 : olcne (ELSA-2021-9525)	Nessus	Oracle Linux Local Security Checks	high
154970	Oracle Linux 7 : olcne (ELSA-2021-9526)	Nessus	Oracle Linux Local Security Checks	high

Detections

Analytics

CVE-2021-32780

high

Tenable Plugins

high

high

high