CVE-2017-20198

Description

The Marathon UI in DC/OS < 1.9.0 allows unauthenticated users to deploy arbitrary Docker containers. Due to improper restriction of volume mount configurations, attackers can deploy a container that mounts the host's root filesystem (/) with read/write privileges. When using a malicious Docker image, the attacker can write to /etc/cron.d/ on the host, achieving arbitrary code execution with root privileges. This impacts any system where the Docker daemon honors Marathon container configurations without policy enforcement.

PUBLISHED Reserved 2025-07-22 | Published 2025-07-23 | Updated 2026-05-15 | Assigner VulnCheck

Problem types

CWE-732 Incorrect Permission Assignment for Critical Resource

Product status

Credits

Erik Daguerre finder

References

www.exploit-db.com/exploits/42134 exploit

raw.githubusercontent.com/...its/linux/http/dcos_marathon.rb exploit

web.archive.org/...rroom.rsmus.com/dcos-marathon-compromise/ technical-description

dcos.io/ product

www.vulncheck.com/...es/dcos-marathon-docker-mount-abuse-rce third-party-advisory

cve.org (CVE-2017-20198)

nvd.nist.gov (CVE-2017-20198)

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