National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-11246 Detail

Current 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 1.12.9, versions prior to 1.13.6, versions prior to 1.14.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N (V3.0 legend)
Impact Score: 3.6
Exploitability Score: 2.8


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/kubernetes/kubernetes/pull/76788 Patch Third Party Advisory
https://groups.google.com/forum/#!topic/kubernetes-security-announce/NLs2TGbfPdo Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Controls (CWE-264)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
1.0.0
Up to (including)
1.12.10
 cpe:2.3:a:kubernetes:kubernetes:1.12.11:beta0:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
1.13.0
Up to (excluding)
1.13.9
 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
1.14.0
Up to (excluding)
1.14.5
 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
1.15.0
Up to (excluding)
1.15.2


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-11246
NVD Published Date:
08/28/2019
NVD Last Modified:
09/04/2019