ESB-2019.0642 - [Linux] IBM Cloud Private: Root compromise - Existing account 2019-03-01

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0642
        IBM Security Bulletin: IBM Cloud Private is affected by an
                      issue with runc used by Docker
                               1 March 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Cloud Private
Publisher:         IBM
Operating System:  Linux variants
Impact/Access:     Root Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-5736  

Reference:         ESB-2019.0612
                   ESB-2019.0606
                   ESB-2019.0498.3
                   ESB-2019.0488.2
                   ESB-2019.0458
                   ESB-2019.0428

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10871642

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IBM Cloud Private is affected by an issue with runc used by Docker

Product:             IBM Cloud Private

Software version:    All Versions

Operating system(s): Linux

Reference #:         0871642

Security Bulletin

Summary

IBM Cloud Private is affected by an issue with runc used by Docker. The
vulnerability allows a malicious container to overwrite the host runc binary
and thus gain root-level code execution on the host

Vulnerability Details

CVEID: CVE-2019-5736
DESCRIPTION: Runc could allow a local attacker to execute arbitrary commands on
the system, cause by the improper handling of system file descriptors when
running containers. An attacker could exploit this vulnerability using a
malicious container to overwrite the contents of the host runc binary and
execute arbitrary commands with root privileges on the host system.
CVSS Base Score: 7.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
156819 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H)

Affected Products and Versions

IBM Cloud Private 3.1.x
IBM Cloud Private 2.1.x

Remediation/Fixes

Users of the IBM Cloud Private supplied Docker packages should apply one of the
the followingpatches based on their platform

IBM Cloud Private - All Versions - Linux_x86 (Ubuntu, RHEL)

  o 2.1.0.1
  o 2.1.0.2
  o 2.1.0.3
  o 3.1.0
  o 3.1.1
  o 3.1.2

IBM Cloud Private - All Versions - Linux_x86 (SLES)
Links to Fix Central will be added when available

IBM Cloud Private - All Versions - ppc64le(Ubuntu, RHEL)
Links to Fix Central will be added when available

IBM Cloud Private - All Versions - ppc64le (SLES)
Links to Fix Central will be added when available

IBM Cloud Private - All Versions - s390x (Ubuntu, RHEL)
Links to Fix Central will be added when available

IBM Cloud Private - All Versions - s390x (SLES)
Links to Fix Central will be added when available

IBM Cloud Private users who obtained Docker from other sources should obtain a
patched versionfrom the appropriate vendor.

Workarounds and Mitigations

None

Reference

Complete CVSS v3 Guide
On-line Calculator v3

runc GIT Repository

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

22 February 2019 - original document published

*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

According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY
OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF
ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

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