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Security Bulletin: A Security Vulnerability affects IBM Cloud Private - kubectl (CVE-2019-11251)

Security Bulletin


Summary

A Security Vulnerability affects IBM Cloud Private - kubectl

Vulnerability Details

CVEID:   CVE-2019-11251
DESCRIPTION:   Kubernetes could allow a remote attacker to gain unauthorized access to the system, caused by an error in `kubectl cp` that allows a combination of two symlinks to copy a file outside of its destination directory. An attacker could exploit this vulnerability to write arbitrary files outside of the destination tree.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/168617 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Cloud Private3.2.1 CD
IBM Cloud Private3.2.0 CD

Remediation/Fixes

Product defect fixes and security updates are only available for the two most recent Continuous Delivery (CD) update packages
  • IBM Cloud Private 3.2.0
  • IBM Cloud Private 3.2.1
For IBM Cloud Private 3.2.0, apply November fix pack:
 
For IBM Cloud Private 3.2.1, apply November fix pack:

For IBM Cloud Private 3.1.0, 3.1.1, 3.1.2:
  • Upgrade to the latest Continuous Delivery (CD) update package, IBM Cloud Private 3.2.1. 
  • If required, individual product fixes can be made available between CD update packages for resolution of problems. Contact IBM support for assistance

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

25 Nov 2019: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Document Information

Modified date:
24 December 2019

UID

ibm11164520

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