National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-11251 Detail

Current 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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 5.7 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

Nist CVSS score does not match with CNA score
CNA:  Kubernetes
Base Score: 4.8 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/kubernetes/kubernetes/issues/87773 Third Party Advisory
https://groups.google.com/d/msg/kubernetes-announce/YYtEFdFimZ4/nZnOezZuBgAJ Mailing List Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-59 Improper Link Resolution Before File Access ('Link Following') NIST  
CWE-61 UNIX Symbolic Link (Symlink) Following Kubernetes  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:kubernetes:kubernetes:1.1-1.12:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
1.13.0
Up to (excluding)
1.13.11
 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
1.14.0
Up to (excluding)
1.14.7
 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
1.15.0
Up to (excluding)
1.15.4


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-11251
NVD Published Date:
02/03/2020
NVD Last Modified:
02/06/2020