Detections
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Oracle Linux 8 : olcne (ELSA-2021-9396)

critical Nessus Plugin ID 152265

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

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.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2021-9396.html

Plugin Details

Severity: Critical

ID: 152265

File Name: oraclelinux_ELSA-2021-9396.nasl

Version: 1.4

Type: local

Agent: unix

Published: 8/6/2021

Updated: 12/6/2023

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-31921

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:istio, p-cpe:/a:oracle:linux:istio-istioctl, p-cpe:/a:oracle:linux:istio-pilot-agent, p-cpe:/a:oracle:linux:istio-pilot-discovery, p-cpe:/a:oracle:linux:kubeadm, p-cpe:/a:oracle:linux:kubectl, p-cpe:/a:oracle:linux:kubelet, p-cpe:/a:oracle:linux:olcne-agent, p-cpe:/a:oracle:linux:olcne-api-server, p-cpe:/a:oracle:linux:olcne-istio-chart, p-cpe:/a:oracle:linux:olcne-nginx, p-cpe:/a:oracle:linux:olcne-prometheus-chart, p-cpe:/a:oracle:linux:olcne-utils, p-cpe:/a:oracle:linux:olcnectl

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/6/2021

Vulnerability Publication Date: 4/22/2021

Reference Information

CVE: CVE-2021-28682, CVE-2021-28683, CVE-2021-29258, CVE-2021-31920, CVE-2021-31921, CVE-2021-34824