CVE-2019-11251

low-risk
Published 2020-02-03

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.

Do I need to act?

~
3.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.8/10 Medium
NETWORK / HIGH complexity

Affected Products (2)

Affected Vendors

Kubernetes

References (4)

Third Party Advisory https://github.com/kubernetes/kubernetes/issues/87773
Mailing List https://groups.google.com/d/msg/kubernetes-announce/YYtEFdFimZ4/nZnOezZuBgAJ
Third Party Advisory https://github.com/kubernetes/kubernetes/issues/87773
Mailing List https://groups.google.com/d/msg/kubernetes-announce/YYtEFdFimZ4/nZnOezZuBgAJ
29
/ 100
low-risk
Severity 15/34 · Moderate
Exploitability 7/34 · Low
Exposure 7/34 · Low