#VU16340 Command-line argument injection attack in Kubernetes - CVE-2018-1002101

Vulnerability identifier: #VU16340

Vulnerability risk: High

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Amber]

CVE-ID: CVE-2018-1002101

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: Kubernetes

Description

The vulnerability allows a remote authenticated attacker to conduct a command-line argument injection attack on a targeted system.

The vulnerability exists due to improper handling user-supplied input when Server Message Block (SMB) volumes are mounted on Windows nodes. A remote authenticated attacker can send specially crafted input to a targeted system while setting up an SMB volume mount, conduct a command-line argument injection attack, which the attacker could use to execute arbitrary code or access or modify sensitive information.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Kubernetes: 1.9.0 - 1.9.9, 1.10.0 rc1 - 1.11.1

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External links
https://github.com/kubernetes/kubernetes/issues/65750

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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 Internet.

Is there known malware, which exploits this vulnerability?

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