Open redirect in Kubernetes



| Updated: 2020-08-08
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-1002102
CWE-ID CWE-601
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Kubernetes
Server applications / Frameworks for developing and running applications

Fedora
Operating systems & Components / Operating system

Vendor Kubernetes
Fedoraproject

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Open redirect

EUVDB-ID: #VU35005

Risk: Low

CVSSv4.0: 0.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1002102

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote privileged user to gain access to sensitive information.

Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Kubernetes: 1.14.0

Fedora: 1.14.0 - 31

CPE2.3 External links

https://github.com/kubernetes/kubernetes/issues/85867
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Q56CULSH7F7BC4NPS67ZS23ZCLL5TIVK/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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



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