Multiple vulnerabilities in Kubernetes

Published: 2023-08-25

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-3955 CVE-2023-3676
CWE-ID	CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Kubernetes Server applications / Frameworks for developing and running applications
Vendor	Kubernetes

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU80008

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3955

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote user to escalate privileges on Windows nodes.

The vulnerability exists due to improper input validation. A remote user with ability to create pods on Windows nodes can obtain administrative privileges on these nodes.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Kubernetes: 1.0.0 - 1.28.0

External links

http://seclists.org/oss-sec/2023/q3/126
http://github.com/kubernetes/kubernetes/issues/119595

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.

2) Input validation error

EUVDB-ID: #VU80006