#VU22431 UNIX symbolic link following in Kubernetes - CVE-2019-11251
Published: October 31, 2019
Vulnerability identifier: #VU22431
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-11251
CWE-ID: CWE-61
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Kubernetes
Kubernetes
Software vendor:
Kubernetes
Kubernetes
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a symlink following issue in kubectl cp. A local user can create two symbolic links and overwrite files on the system with privileges of the application.
Successful exploitation of this vulnerability may result in privilege escalation.
Remediation
Install updates from vendor's website.