Time-of-check Time-of-use (TOCTOU) Race Condition in Kubernetes - CVE-2020-8562
Published: July 23, 2024
Vulnerability identifier: #VU94655
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-8562
CWE-ID: CWE-367
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Kubernetes
Affected software:
Kubernetes
Kubernetes
Detailed vulnerability description
The vulnerability allows a remote privileged user to gain access to potentially sensitive information.
The vulnerability exists due to a time-of-check time-of-use (TOCTOU) race condition flaw in the API Server proxy. A remote privileged user can send a specially-crafted request and exploit this vulnerability to gain access to private networks on the Kubernetes control plane components.
How to mitigate CVE-2020-8562
Install updates from vendor's website.