CVE-2019-11251

MEDIUM

Kubernetes 1.1-1.12, <1.13.11, <1.14.7, <1.15.4 - Arbitrary File Write via kubectl cp Symlink Traversal

Title source: llm
STIX 2.1

Description

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.

References (2)

Core 2
Core References
Third Party Advisory x_refsource_confirm
https://github.com/kubernetes/kubernetes/issues/87773
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://groups.google.com/d/msg/kubernetes-announce/YYtEFdFimZ4/nZnOezZuBgAJ

Scores

CVSS v3 4.8
EPSS 0.0231
EPSS Percentile 81.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N

Details

CWE
CWE-61 CWE-59
Status published
Products (3)
k8s.io/kubernetes 1.13.10 - 1.13.11Go
kubernetes/kubernetes 1.1-1.12
kubernetes/kubernetes 1.13.0 - 1.13.11
Published Feb 03, 2020
Tracked Since Feb 18, 2026