#VU11122 Denial of service in Kubernetes - CVE-2017-1002102

Vulnerability identifier: #VU11122

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-1002102

CWE-ID: CWE-264

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Kubernetes
Server applications / Frameworks for developing and running applications

Vendor: Kubernetes

Description
The vulnerability allows an adjacent authenticated attacker to cause DoS condition on the target system.

The weakness exists due to improper atomic writer volume handling when using a container with secret, configMap, projected, or downwardAPI volume. An adjacent attacker can delete arbitrary files and directories and cause the service to crash.

Mitigation
Update to versions 1.10.0-beta.3 or 1.10.0-beta.4.

Vulnerable software versions

Kubernetes: 1.3.0 - 1.3.10, 1.4.0 - 1.4.12, 1.5.0 - 1.5.8, 1.6.0 - 1.6.13, 1.7.0 - 1.7.13, 1.8.0 - 1.8.8, 1.9.0 - 1.9.3

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External links
https://github.com/kubernetes/kubernetes/issues/60814

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.