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Vulnerability CVE-2019-11249
Published: 2019-08-28 Modified: 2019-08-29
Description: |
The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, 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. Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12. |
Type:
CWE-264 (Permissions, Privileges, and Access Controls)
CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:P)
CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
5.8/10 |
4.9/10 |
8.6/10 |
Exploit range |
Attack complexity |
Authentication |
Remote |
Medium |
No required |
Confidentiality impact |
Integrity impact |
Availability impact |
None |
Partial |
Partial |
References: |
https://access.redhat.com/errata/RHBA-2019:2794
https://access.redhat.com/errata/RHBA-2019:2816
https://access.redhat.com/errata/RHBA-2019:2824
https://github.com/kubernetes/kubernetes/issues/80984
https://groups.google.com/d/msg/kubernetes-security-announce/vUtEcSEY6SM/v2ZZxsmtFQAJ
https://security.netapp.com/advisory/ntap-20190919-0003/
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