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.
Published 2019-04-01 14:29:01
Updated 2020-02-10 21:49:02
Source DWF
View at NVD,   CVE.org

Products affected by CVE-2019-1002101

Exploit prediction scoring system (EPSS) score for CVE-2019-1002101

0.15%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 51 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-1002101

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.8
MEDIUM AV:N/AC:M/Au:N/C:N/I:P/A:P
8.6
4.9
NIST
6.4
MEDIUM CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
0.5
5.9
DWF
5.5
MEDIUM CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
1.8
3.6
NIST

CWE ids for CVE-2019-1002101

References for CVE-2019-1002101

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