Rapid7 Vulnerability & Exploit Database

Oracle Linux: CVE-2021-32777: ELSA-2021-9546: olcne istio istio kubernetes security update (IMPORTANT) (Multiple Advisories)

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

Oracle Linux: CVE-2021-32777: ELSA-2021-9546: olcne istio istio kubernetes security update (IMPORTANT) (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:C/I:N/A:N)
Published
08/24/2021
Created
11/11/2021
Added
11/09/2021
Modified
12/17/2024

Description

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, only the last header value is sent. This may allow specifically crafted requests to bypass authorization. Attackers may be able to escalate privileges when using ext-authz extension or back end service that uses multiple value headers for authorization. A specifically constructed request may be delivered by an untrusted downstream peer in the presence of ext-authz extension. Envoy versions 1.19.1, 1.18.4, 1.17.4, 1.16.5 contain fixes to the ext-authz extension to correctly merge multiple request header values, when sending request for authorization.

Solution(s)

  • oracle-linux-upgrade-istio
  • oracle-linux-upgrade-istio-istioctl
  • oracle-linux-upgrade-istio-pilot-agent
  • oracle-linux-upgrade-istio-pilot-discovery
  • oracle-linux-upgrade-kubeadm
  • oracle-linux-upgrade-kubectl
  • oracle-linux-upgrade-kubelet
  • oracle-linux-upgrade-olcne-agent
  • oracle-linux-upgrade-olcne-api-server
  • oracle-linux-upgrade-olcnectl
  • oracle-linux-upgrade-olcne-grafana-chart
  • oracle-linux-upgrade-olcne-istio-chart
  • oracle-linux-upgrade-olcne-nginx
  • oracle-linux-upgrade-olcne-olm-chart
  • oracle-linux-upgrade-olcne-prometheus-chart
  • oracle-linux-upgrade-olcne-utils

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
  • Lightweight Endpoint Agent
  • Live Dashboards
  • Real Risk Prioritization
  • IT-Integrated Remediation Projects
  • Cloud, Virtual, and Container Assessment
  • Integrated Threat Feeds
  • Easy-to-Use RESTful API
  • Automation-Assisted Patching
  • Automated Containment
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;