#VU16224 Privilege escalation in Kubernetes - CVE-2018-1002105
Published: December 4, 2018 / Updated: June 17, 2021
Vulnerability identifier: #VU16224
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2018-1002105
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Kubernetes
Kubernetes
Software vendor:
Kubernetes
Kubernetes
Description
The vulnerability allows a remote attacker to gain elevated privileges on the target system.
The weakness exists due to an error when handling proxy requests. With a specially crafted request, users that are authorized to establish a connection through the Kubernetes API server to a backend server can then send arbitrary requests over the same connection directly to that backend, authenticated with the Kubernetes API server’s TLS credentials used to establish the backend connection.
The weakness exists due to an error when handling proxy requests. With a specially crafted request, users that are authorized to establish a connection through the Kubernetes API server to a backend server can then send arbitrary requests over the same connection directly to that backend, authenticated with the Kubernetes API server’s TLS credentials used to establish the backend connection.
Remediation
The vulnerability has been fixed in the versions 1.10.11, 1.11.5, 1.12.3, 1.13.0-rc.1.