What’s Vulnerable › Vulnerabilities

CVE-2017-20198: DC/OS Marathon UI < 1.9.0 Unauthenticated RCE via Docker Mount Abuse

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-23 · updated 2026-06-17
• Weakness: CWE-732

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.

Affected products

• D2iQ, Inc. DC/OS Marathon: before 1.9.0 — fixed in 1.9.0

How to fix

Upgrade to a fixed version: D2iQ, Inc. DC/OS Marathon 1.9.0. Check the vendor advisory for mitigations.

References

• https://dcos.io/
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/http/dcos_marathon.rb
• https://web.archive.org/web/20230609134421/https://warroom.rsmus.com/dcos-marathon-compromise/
• https://www.exploit-db.com/exploits/42134
• https://www.vulncheck.com/advisories/dcos-marathon-docker-mount-abuse-rce

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