CVE-2016-6595
mediumpriority · track · 27EPSS 0.028 · 86 %ileEUUSEPSS · scored 2026-10-27
The SwarmKit toolkit 1.12.0 for Docker allows remote authenticated users to cause a denial of service (prevention of cluster joins) via a long sequence of join and quit actions. NOTE: the vendor disputes this issue, stating that this sequence is not "removing the state that is left by old nodes. At some point the manager obviously stops being able to accept new nodes, since it runs out of memory. Given that both for Docker swarm and for Docker Swarmkit nodes are *required* to provide a secret token (it's actually the only mode of operation), this means that no adversary can simply join nodes and exhaust manager resources. We can't do anything about a manager running out of memory and not being able to add new legitimate nodes to the system. This is merely a resource provisioning issue, and definitely not a CVE worthy vulnerability.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (14)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2016/08/04/1cnnvd
- http://www.openwall.com/lists/oss-security/2016/09/02/1cnnvd
- http://www.openwall.com/lists/oss-security/2016/09/02/8cnnvd
- http://www.securityfocus.com/bid/92195cnnvd
- http://www.openwall.com/lists/oss-security/2016/08/04/1enisa_euvd
- http://www.openwall.com/lists/oss-security/2016/09/02/1enisa_euvd
- http://www.openwall.com/lists/oss-security/2016/09/02/8enisa_euvd
- http://www.securityfocus.com/bid/92195enisa_euvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan