Vulnerability identifier: #VU26474

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8552

CWE-ID: CWE-789

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 attacker to perform a denial of service (DoS) attack.

The vulnerability exists in the Kubernetes API server component due to improper allocation of memory. A remote attacker can send a specially crafted API request and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Kubernetes: 1.15.0 - 1.15.9, 1.16.0 - 1.16.6, 1.17.0 - 1.17.2, 1.14.0 - 1.14.10, 1.13.0 - 1.13.12, 1.12.0 - 1.12.10, 1.11.0 - 1.11.10, 1.10.0 - 1.10.13, 1.2.0 - 1.2.7, 1.1.0 - 1.1.8, 1.0.0 - 1.0.7, 1.9.0 - 1.9.11, 1.8.0 - 1.8.15, 1.7.0 - 1.7.16, 1.6.0 - 1.6.13, 1.5.0 - 1.5.8, 1.4.0 - 1.4.12, 1.3.0 - 1.3.10

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External links
http://github.com/kubernetes/kubernetes/issues/89378
http://groups.google.com/forum/#!topic/kubernetes-security-announce/2UOlsba2g0s

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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.