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AWS Issues Alert for Multiple Container Systems

February 11, 2019 / Kacy Zurkus

A security issue that affects several open source container management systems, including Amazon Linux and Amazon Elastic Container Service, has been disclosed by AWS. The vulnerabilities (CVE-2019-5736) were reportedly discovered by security researchers Adam Iwaniuk, Borys Poplawski and Aleksa Sarai and would allow an attacker with minimal user interaction to “overwrite the host runc binary and thus gain root-level code execution on the host.” Also among the affected AWS containers are the service for Kubernetes (Amazon EKS), Fargate, IoT Greengrass, Batch, Elastic Beanstalk, Cloud 9, SageMaker, RoboMaker and Deep Learning AMI. In its security issue notice published 11 February, AWS said that no customer action is required for those containers not on the list. Though blocked when correctly using user namespaces, the vulnerability is not blocked by the default AppArmor policy or the default SELinux policy of Fedora [++], according to Sarai.