Uncontrolled Memory Allocation in Kubernetes - CVE-2020-8551
Published: March 31, 2020
Vulnerability identifier: #VU26473
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-8551
CWE-ID: CWE-789
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the Kubelet component due to improper allocation of memory in the kubelet API, including the unauthenticated HTTP read-only API typically served on port 10255, and the authenticated HTTPS API typically served on port 10250. A remote attacker on the local network can cause a denial of service condition on the target system.
Affected software
Kubernetes
Fedora
origin
openshift (Red Hat package)
Fedora
origin
openshift (Red Hat package)
How to mitigate CVE-2020-8551
Install updates from vendor's website.
Kubernetes - addressed in versions 1.15.10, 1.16.7, 1.17.3
origin - update to 3.11.2-1.fc32
openshift (Red Hat package) - addressed in versions 4.3.10-202003300855.git.0.da48c1d.el7, 4.3.10-202003300855.git.0.da48c1d.el8
origin - update to 3.11.2-1.fc32
openshift (Red Hat package) - addressed in versions 4.3.10-202003300855.git.0.da48c1d.el7, 4.3.10-202003300855.git.0.da48c1d.el8