#VU64817 Information Exposure Through an Error Message in Kubernetes - CVE-2019-11252

Vulnerability identifier: #VU64817

Vulnerability risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-11252

CWE-ID: CWE-209

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 user to gain access to sensitive information.

The vulnerability exists in kube-controller-manager due to credential leakage via error messages in mount failure logs and events for AzureFile and CephFS volumes. A remote user can gain access to kubelet logs, read the credentials, and use them to access other services.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Kubernetes: 1.0.0 - 1.0.7, 1.1.0 - 1.17.17

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External links
https://github.com/kubernetes/kubernetes/pull/88684
https://bugzilla.redhat.com/show_bug.cgi?id=1860158

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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.