#VU64820 Inclusion of Sensitive Information in Log Files in Kubernetes - CVE-2020-8565

Vulnerability identifier: #VU64820

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-8565

CWE-ID: CWE-532

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Kubernetes
Server applications / Frameworks for developing and running applications

Vendor: Kubernetes

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to authorization and bearer tokens will be written to log files if the logging level is set to at least 9. A local user can read the log files and gain access to sensitive data.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Kubernetes: 1.17.0 - 1.19.5

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External links
https://github.com/kubernetes/kubernetes/issues/95623
https://groups.google.com/g/kubernetes-security-discuss/c/vm-HcrFUOCs/m/36utxAM5CwAJ
https://bugzilla.redhat.com/show_bug.cgi?id=1886638

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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