Vulnerabilidad de escalamiento de privilegios de Kubernetes dada a conocer públicamente (CVE-2018-1002105)
Patches are available for a critical privilege escalation flaw (CVE-2018-1002105) in the open-source container orchestration system, Kubernetes.
Antecedentes
On December 3, details about a privilege escalation vulnerability in Kubernetes, the popular open source container orchestration system, were publicly disclosed by the Kubernetes team. Kubernetes is used to automate the deployment, scaling, and management of containerized applications.
Vulnerability details
Designated as CVE-2018-1002105, the vulnerability exists in the proxy handling function of the Kubernetes API server. Arbitrary requests can be made to the backend server via the Kubernetes API server if the requestor is permitted to establish a connection to the API server. According to the Kubernetes team, “all users (authenticated and unauthenticated) are allowed to perform discovery API calls that allow this escalation” through the default configuration.
Additionally, this vulnerability allows for the escalation of Kubernetes pod API requests (exec, attach, portforward) through the kubelet API.
The Kubernetes team notes that, due to the fact that “unauthorized requests are made over an established connection,” the requests won’t appear in the audit or server logs. However, the requests appearing in either the kubelet or aggregated API server logs will be “indistinguishable from correctly authorized and proxied requests via the Kubernetes API server,” making it difficult to detect the use of this vulnerability in your environment.
Urgently required actions
System administrators, users or anyone deploying Kubernetes should upgrade to the patched versions immediately. The following versions of Kubernetes are affected by this vulnerability:
- Kubernetes v1.0.x-1.9.x
- Kubernetes v1.10.0-1.10.10
- Kubernetes v1.11.0-1.11.4
- Kubernetes v1.12.0-1.12.2
The vulnerability is addressed in the following versions of Kubernetes:
Additionally, users of Red Hat’s OpenShift Container Platform should upgrade to the patched versions as soon as possible.
Lastly, please review the security tracker pages for Debian and SUSE distributions for up-to-date information on the availability of a Kubernetes patch on these platforms.
Identificación de los sistemas afectados
A list of Nessus plugins to identify this vulnerability will appear here as they’re released.
Obtenga más información
- Kubernetes: proxy request handling in kube-apiserver can leave vulnerable TCP connections
- Red Hat: About CVE-2018-1002105
- Debian Security Tracker: CVE-2018-1002105
- SUSE Security Tracker: CVE-2018-1002105
Learn more about Tenable, the first Cyber Exposure platform for holistic management of your modern attack surface. Get a free 60-day trial of Tenable.io Vulnerability Management.
Artículos relacionados
Cybersecurity Snapshot: Cyber Agencies Offer Secure AI Tips, while Stanford Issues In-Depth AI Trends Analysis, Including of AI Security
April 19, 2024Check out recommendations for securing AI systems from the Five Eyes cybersecurity agencies. Plus, Stanford University offers a comprehensive review of AI trends. Meanwhile, a new open-source tool aims to simplify SBOM usage. And don’t miss the latest CIS Benchmarks updates. And much more!
Cybersecurity Snapshot: CISA Says Midnight Blizzard Swiped U.S. Gov’t Emails During Microsoft Hack, Tells Fed Agencies To Take Immediate Action
April 12, 2024Check out CISA’s urgent call for federal agencies to protect themselves from Midnight Blizzard’s breach of Microsoft corporate emails. Plus, a new survey shows cybersecurity pros are guardedly optimistic about AI. Meanwhile, SANS pinpoints the four trends CISOs absolutely must focus on this year. And the NSA is sharing best practices for data security. And much more!
Cybersecurity Snapshot: CSRB Calls Exchange Online Hack “Preventable,” While CISA, Others Warn About XZ Utils Backdoor Vulnerability
April 5, 2024Check out why the Cyber Safety Review Board has concluded that the Microsoft Exchange Online breach “should never have occurred.” Plus, warnings about the supply chain attack against the XZ Utils open source utility are flying. In addition, a report says ransomware attacks surged in February. And the U.S. government issues a comprehensive AI usage policy for federal agencies. And much more!
Operational Technology in the DoD: Ensuring a Secure and Efficient Power Grid
April 19, 2024In an evolving threat landscape, the DoD must make sure that its mission-critical operations don’t experience power outages.
Cybersecurity Snapshot: Cyber Agencies Offer Secure AI Tips, while Stanford Issues In-Depth AI Trends Analysis, Including of AI Security
April 19, 2024Check out recommendations for securing AI systems from the Five Eyes cybersecurity agencies. Plus, Stanford University offers a comprehensive review of AI trends. Meanwhile, a new open-source tool aims to simplify SBOM usage. And don’t miss the latest CIS Benchmarks updates. And much more!
Tenable and Thales Collaborate to Provide Cyber Defense Simulations to Better Secure Operational Technology Environments
April 18, 2024The heart of the Welsh Valleys is home to the Thales Ebbw Vale campus, a world-class facility jointly funded by the Welsh government as part of its regeneration program for the region. At the core of the facility is the Cyber Range, a simulation and virtualization platform for training, testing, exercising and R&D. Tenable has joined the lineup of solutions used to run real world simulations in this controlled environment.
- Cloud
- Container security
- Threat Intelligence
- Vulnerability Management