Information disclosure in Kubernetes Kubernetes

1) Information disclosure

EUVDB-ID: #VU30805

Risk: High

CVSSv4.0: 6.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-11248

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.

The debugging endpoint /debug/pprof is exposed over the unauthenticated Kubelet healthz port. The go pprof endpoint is exposed over the Kubelet's healthz port. This debugging endpoint can potentially leak sensitive information such as internal Kubelet memory addresses and configuration, or for limited denial of service. Versions prior to 1.15.0, 1.14.4, 1.13.8, and 1.12.10 are affected. The issue is of medium severity, but not exposed by the default configuration.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Kubernetes: 1.12.0 alpha.1 - 1.12.9

CPE2.3

• cpe:2.3:a:kubernetes:kubernetes:1.12.9:*:*:*:*:*:*:*

External links

https://github.com/kubernetes/kubernetes/issues/81023
https://groups.google.com/d/msg/kubernetes-security-announce/pKELclHIov8/BEDtRELACQAJ
https://security.netapp.com/advisory/ntap-20190919-0003/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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