The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:2061 advisory.

  - istio/istio: authorization bypass when using AUTO_PASSTHROUGH (CVE-2021-31921)

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the RHSA-2021:2085 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):

    * istio/istio: authorization bypass when using AUTO_PASSTHROUGH (CVE-2021-31921)

    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 this issue 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.

  - 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. (CVE-2021-28683)

  - An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which     a very large grpc-timeout value leads to unexpected timeout calculations. (CVE-2021-28682)

  - Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request     path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio     authorization policy when path based authorization rules are used. (CVE-2021-31920)

  - Istio before 1.8.6 and 1.9.x before 1.9.5 contains a remotely exploitable vulnerability where an external     client can access unexpected services in the cluster, bypassing authorization checks, when a gateway is     configured with AUTO_PASSTHROUGH routing configuration. (CVE-2021-31921)

  - An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because     an empty METADATA map triggers a Reachable Assertion. (CVE-2021-29258)

  - Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where     credentials specified in the Gateway and DestinationRule credentialName field can be accessed from     different namespaces. (CVE-2021-34824)

Note that Nessus has not tested for this issue 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.

  - 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. (CVE-2021-28683)

  - An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which     a very large grpc-timeout value leads to unexpected timeout calculations. (CVE-2021-28682)

  - Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request     path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio     authorization policy when path based authorization rules are used. (CVE-2021-31920)

  - Istio before 1.8.6 and 1.9.x before 1.9.5 contains a remotely exploitable vulnerability where an external     client can access unexpected services in the cluster, bypassing authorization checks, when a gateway is     configured with AUTO_PASSTHROUGH routing configuration. (CVE-2021-31921)

  - An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because     an empty METADATA map triggers a Reachable Assertion. (CVE-2021-29258)

  - Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where     credentials specified in the Gateway and DestinationRule credentialName field can be accessed from     different namespaces. (CVE-2021-34824)

Note that Nessus has not tested for this issue 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.

  - 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. (CVE-2021-28683)

  - An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which     a very large grpc-timeout value leads to unexpected timeout calculations. (CVE-2021-28682)

  - Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request     path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio     authorization policy when path based authorization rules are used. (CVE-2021-31920)

  - Istio before 1.8.6 and 1.9.x before 1.9.5 contains a remotely exploitable vulnerability where an external     client can access unexpected services in the cluster, bypassing authorization checks, when a gateway is     configured with AUTO_PASSTHROUGH routing configuration. (CVE-2021-31921)

  - An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because     an empty METADATA map triggers a Reachable Assertion. (CVE-2021-29258)

  - Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where     credentials specified in the Gateway and DestinationRule credentialName field can be accessed from     different namespaces. (CVE-2021-34824)

Note that Nessus has not tested for this issue 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-2021-9398 advisory.

  - 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. (CVE-2021-28683)

  - An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which     a very large grpc-timeout value leads to unexpected timeout calculations. (CVE-2021-28682)

  - Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request     path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio     authorization policy when path based authorization rules are used. (CVE-2021-31920)

  - Istio before 1.8.6 and 1.9.x before 1.9.5 contains a remotely exploitable vulnerability where an external     client can access unexpected services in the cluster, bypassing authorization checks, when a gateway is     configured with AUTO_PASSTHROUGH routing configuration. (CVE-2021-31921)

  - An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because     an empty METADATA map triggers a Reachable Assertion. (CVE-2021-29258)

  - Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where     credentials specified in the Gateway and DestinationRule credentialName field can be accessed from     different namespaces. (CVE-2021-34824)

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

ID	Name	Product	Family	Published	Updated	Severity
149816	RHEL 8 : Red Hat OpenShift Service Mesh 2.0.5 (RHSA-2021:2061)	Nessus	Red Hat Local Security Checks	5/20/2021	4/28/2024	critical
149840	RHEL 8 : servicemesh (RHSA-2021:2085)	Nessus	Red Hat Local Security Checks	5/21/2021	6/4/2024	critical
152265	Oracle Linux 8 : olcne (ELSA-2021-9396)	Nessus	Oracle Linux Local Security Checks	8/6/2021	12/6/2023	critical
152266	Oracle Linux 7 : olcne (ELSA-2021-9399)	Nessus	Oracle Linux Local Security Checks	8/6/2021	12/6/2023	critical
152267	Oracle Linux 7 : olcne (ELSA-2021-9397)	Nessus	Oracle Linux Local Security Checks	8/6/2021	12/6/2023	critical
152268	Oracle Linux 8 : olcne (ELSA-2021-9398)	Nessus	Oracle Linux Local Security Checks	8/6/2021	12/6/2023	critical

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