Vulnerability in Kubernetes
CVE-2019-11251
The Kubernetes kubectl cp command in versions 1.1-1.12, and versions prior to 1.13.11, 1.14.7, and 1.15.4 allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.026 (84.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: -0.000
Affected products
- Kubernetes — versions 1.6, prior to 1.14.7, 1.1
Weakness classification (CWE)
Public proof-of-concept exploits
- 43622283/awesome-cloud-native-security
- ARPSyndicate/cvemon
- LouisLiuNova/container-escape-exploits
- Metarget/awesome-cloud-native-security
- Metarget/metarget
- adavarski/HomeLab-Proxmox-k8s-DevSecOps-playground
- adavarski/HomeLab-k8s-DevSecOps-playground
- atesemre/awesome-cloud-native-security
- iridium-soda/container-escape-exploits
- noirfate/k8s_
References
- github.com/kubernetes/kubernetes/issues/87773 (Third Party Advisory)
- groups.google.com/d/msg/kubernetes-announce/YYtEFdFimZ4/nZnOezZuBgAJ (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11251?
- CVE-2019-11251 is a medium-severity vulnerability in Kubernetes, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 4.8/10. Published 2020-02-03.
- How severe is CVE-2019-11251?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2019-11251 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.