Privilege escalation in Kubernetes



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-5528
CWE-ID CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Kubernetes
Server applications / Frameworks for developing and running applications

Vendor Kubernetes

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU83309

Risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-5528

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to improper access restrictions. A remote user with ability to create pods and persistent volumes on Windows nodes can obtain admin privileges on those nodes.

The vulnerability affects Kubernetes clusters only, if they are using an in-tree storage plugin for Windows nodes.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Kubernetes: 1.8.0 - 1.28.3

CPE2.3 External links

https://github.com/kubernetes/kubernetes/issues/121879
https://groups.google.com/g/kubernetes-security-announce/c/SL_d4NR8pzA


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.



###SIDEBAR###