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Vulnerability record · CVE-2019-1002101 · published 1 April 2019

CVE-2019-1002101: Kubernetes link following vulnerability

Kubernetes · Kubernetes

The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes creates a tar inside the container, copies it over the network, and kubectl unpacks it on the user’s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user’s machine when kubectl cp is called, limited only by the system permissions of the local user. The untar function can both create and follow symbolic links. The issue is resolved in kubectl v1.11.9, v1.12.7, v1.13.5, and v1.14.0.

5.5 CVSS 3.0 Medium EPSS 13% · top 3.9% CWE-59 · Link following
5.5CVSS 3.0 base score, v2 5.8
13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
21References
17 Jun 2026Last modified by NVD

Description

The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes creates a tar inside the container, copies it over the network, and kubectl unpacks it on the user’s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user’s machine when kubectl cp is called, limited only by the system permissions of the local user. The untar function can both create and follow symbolic links. The issue is resolved in kubectl v1.11.9, v1.12.7, v1.13.5, and v1.14.0.

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2019/06/21/1
http://www.openwall.com/lists/oss-security/2019/08/05/5
http://www.securityfocus.com/bid/107652 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHBA-2019:0619
https://access.redhat.com/errata/RHBA-2019:0620
https://access.redhat.com/errata/RHBA-2019:0636
https://github.com/kubernetes/kubernetes/pull/75037 PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPV2RE5RMOGUVP5WJMXKQJZ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QZB7E3DOZ5WDG46XAIU6K32
https://www.twistlock.com/labs-blog/disclosing-directory-traversal-vulnerability-kubernetes-copy-cve-2019-1002101/
https://access.redhat.com/security/cve/cve-2019-1002101 Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/06/21/1
http://www.openwall.com/lists/oss-security/2019/08/05/5
http://www.securityfocus.com/bid/107652 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHBA-2019:0619
https://access.redhat.com/errata/RHBA-2019:0620
https://access.redhat.com/errata/RHBA-2019:0636
https://github.com/kubernetes/kubernetes/pull/75037 PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPV2RE5RMOGUVP5WJMXKQJZ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QZB7E3DOZ5WDG46XAIU6K32
https://www.twistlock.com/labs-blog/disclosing-directory-traversal-vulnerability-kubernetes-copy-cve-2019-1002101/

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Source: NIST National Vulnerability Database (record CVE-2019-1002101), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.