CVE-2017-20198

Public Exploit
DC/OS Marathon UI < 1.9.0 Unauthenticated RCE via Docker Mount Abuse

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.

Category

9.3
CVSS
Severity: Critical
CVSS 4.0 •
EPSS 0.10%
Third-Party Advisory vulncheck.com
Affected: D2iQ, Inc. DC/OS Marathon
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2017-20198?
CVE-2017-20198 has been scored as a critical severity vulnerability.
How to fix CVE-2017-20198?
To fix CVE-2017-20198, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-20198 being actively exploited in the wild?
It is possible that CVE-2017-20198 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-20198?
CVE-2017-20198 affects D2iQ, Inc. DC/OS Marathon.
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