An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable NULL pointer dereference and crash in TLS when an unknown TLS alert code is received.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9398 advisory.

    - Address Istio CVE's CVE-2021-28683, CVE-2021-28682, CVE-2021-29258, CVE-2021-31920, CVE-2021-31921,     CVE-2021-34824
    - Address CVE-2021-28683, CVE-2021-28682, CVE-2021-29258, CVE-2021-31920, CVE-2021-31921, CVE-2021-34824

    istio

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-2021-9397 advisory.

    - Address Istio CVE's CVE-2021-28683, CVE-2021-28682, CVE-2021-29258, CVE-2021-31920, CVE-2021-31921,     CVE-2021-34824

    istio
    - Address CVE-2021-28683, CVE-2021-28682, CVE-2021-29258, CVE-2021-31920, CVE-2021-31921, CVE-2021-34824

    kubernetes

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-2021-9399 advisory.

    - Address Istio CVE's CVE-2021-28683, CVE-2021-28682, CVE-2021-29258, CVE-2021-31920, CVE-2021-31921,     CVE-2021-34824
    - Address CVE-2021-28683, CVE-2021-28682, CVE-2021-29258, CVE-2021-31920, CVE-2021-31921, CVE-2021-34824

    istio

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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9396 advisory.

    - Address Istio CVE's CVE-2021-28683, CVE-2021-28682, CVE-2021-29258, CVE-2021-31920, CVE-2021-31921,     CVE-2021-34824

    istio
    - Address CVE-2021-28683, CVE-2021-28682, CVE-2021-29258, CVE-2021-31920, CVE-2021-31921, CVE-2021-34824

    kubernetes

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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:1322 advisory.

    Red Hat OpenShift Service Mesh is Red Hat's distribution of the Istio service mesh project, tailored for     installation into an on-premise OpenShift Container Platform installation.

    Security Fix(es):

    * envoyproxy/envoy: integer overflow handling large grpc-timeouts (CVE-2021-28682)

    * envoyproxy/envoy: NULL pointer dereference in TLS alert code handling (CVE-2021-28683)

    * envoyproxy/envoy: crash with empty HTTP/2 metadata map (CVE-2021-29258)

    * istio-pilot: requests to debug api can result in panic (CVE-2019-25014)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:1324 advisory.

    Red Hat OpenShift Service Mesh is Red Hat's distribution of the Istio service mesh project, tailored for     installation into an on-premise OpenShift Container Platform installation.

    Security Fix(es):

    * envoyproxy/envoy: integer overflow handling large grpc-timeouts (CVE-2021-28682)

    * envoyproxy/envoy: NULL pointer dereference in TLS alert code handling (CVE-2021-28683)

    * envoyproxy/envoy: crash with empty HTTP/2 metadata map (CVE-2021-29258)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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
152268	Oracle Linux 8 : olcne (ELSA-2021-9398)	Nessus	Oracle Linux Local Security Checks	critical
152267	Oracle Linux 7 : olcne (ELSA-2021-9397)	Nessus	Oracle Linux Local Security Checks	critical
152266	Oracle Linux 7 : olcne (ELSA-2021-9399)	Nessus	Oracle Linux Local Security Checks	critical
152265	Oracle Linux 8 : olcne (ELSA-2021-9396)	Nessus	Oracle Linux Local Security Checks	critical
148943	RHEL 8 : Red Hat OpenShift Service Mesh 1.1.13 (RHSA-2021:1322)	Nessus	Red Hat Local Security Checks	high
148942	RHEL 8 : Red Hat OpenShift Service Mesh 2.0.3 (RHSA-2021:1324)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2021-28683

high

Tenable Plugins

critical

critical

critical

critical

high

high