Understanding the Role of Virtualization in Security
December 2, 2024
Software Container Security Concerns
Shared Kernel Vulnerabilities: Containers share the host operating system’s kernel, increasing the risk if the kernel is compromised
Isolation Issues: Containers provide less isolation compared to virtual machines, potentially allowing for a variety of container breakout attacks
Image Vulnerabilities: Container images downloaded from “hubs” may contain vulnerabilities if not regularly updated and scanned
Privilege Escalation: Misconfigured software containers may run with some elevated privileges, increasing security risks for all software it runs
docker run -d \
--name mysecurecontainer \
--network mynetwork \
--restart unless-stopped \
-v /host/data:/container/data:ro \
-p 8080:80 \
--cap-drop ALL \
--read-only \
--user 1000:1000 \
nginx:latestnginx image from Docker Hub/host/data to container’s /container/data--cap-drop flag to drop all capabilitiesdocker run -d \
--name limitedcontainer \
--memory="512m" \
--cpus="1.5" \
--ulimit nofile=1024:2048 \
--ulimit nproc=100 \
nginx:latestnginx image from Docker Hub--memory flag to limit memory usage--cpus to limit the number of CPUsSecurity Synapse