Security Bulletin: Multiple security vulnerabilities in IBM Cloud Manager with OpenStack affect IBM Cloud Orchestrator and Cloud Orchestrator Enterprise

Summary

IBM Cloud Manager with OpenStack is shipped with IBM Cloud Orchestrator and Cloud Orchestrator Enterprise. Multiple security vulnerabilities have been identified in dnsmasq that is used by IBM Cloud Manager with OpenStack. Information about a security vulnerability affecting IBM Cloud Manager with OpenStack has been published in a security bulletin.

Vulnerability Details

CVEID: CVE-2017-14495**
DESCRIPTION:** dnsmasq is vulnerable to a denial of service, caused by a memory leak when the --add-mac, --add-cpe-id or --add-subnet option is specified. By using vectors related to DNS response creation, a remote attacker could exploit this vulnerability to consume available memory.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/132935 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2017-14494**
DESCRIPTION:** dnsmasq could allow a remote attacker to obtain sensitive information, caused by improper validation of requests. By sending specially-crafted DHCPv6 forwarded requests, a remote attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/132934 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2017-14496**
DESCRIPTION:** dnsmasq is vulnerable to a denial of service, caused by an integer underflow in the add_pseudoheader function. By sending a specially-crafted DNS request, a remote attacker could exploit this vulnerability to cause the service to crash.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/132936 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2017-14493**
DESCRIPTION:** dnsmasq is vulnerable to a stack-based buffer overflow. By sending a specially-crafted DHCPv6 request, a remote attacker could overflow a buffer and execute arbitrary code or cause a denial of service condition on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/132933 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2017-14492**
DESCRIPTION:** dnsmasq is vulnerable to a heap-based buffer overflow. By sending a specially-crafted IPv6 router advertisement request, a remote attacker could overflow a buffer and execute arbitrary code or cause a denial of service condition on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/132932 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2017-14491**
DESCRIPTION:** dnsmasq is vulnerable to a heap-based buffer overflow. By sending a specially-crafted DNS response, a remote attacker could overflow a buffer and execute arbitrary code or cause a denial of service condition on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/132931 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2017-13704**
DESCRIPTION:** dnsmasq is vulnerable to a denial of service, caused by improper validation of DNS packet size parameter. By a specially-crafted DNS packet, a remote attacker could exploit this vulnerability to cause the service to crash.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/132930 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Principal Product and Version(s)

| Affected Supporting Product and Version
—|—
IBM Cloud Orchestrator and Cloud Orchestrator Enterprise 2.4, 2.4.0.1, 2.4.0.2, 2.4.0.3, 2.4.04, 2.4.0.5|

IBM Cloud Manager with OpenStack V4.1.0.6 through V4.1.0.6 ifix4
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Remediation/Fixes

Product

| VRMF| Remediation/First Fix
—|—|—

IBM Cloud Orchestrator and Orchestrator Enterprise |

2.4, 2.4.0.1, 2.4.0.2, 2.4.0.3, 2.4.04, 2.4.0.5 |

• For RedHat Enterprise Linux 7.4 versioupdate dnsmasq and dnsmasq-utils packages to version 2.76-2 on all controller and compute nodes.
• For all other RedHat Enterprise Linux versions, download the following rpms:
  • _ dnsmasq-2.48-18.el6_9.x86_64.rpm from https://access.redhat.com/errata/RHSA-2017:2838 _
  • dnsmasq-utils-2.48-18.el6_9.x86_64.rpm from _ https://access.redhat.com/security/cve/CVE-2017-14491 _

Refer to the following security bulletin for vulnerability details and information about fixes addressed by
IBM Cloud Manager with Openstack that is shipped with IBM Cloud Orchestrator and Cloud Orchestrator Enterprise.

IBM Cloud Orchestrator and Cloud Orchestrator Enterprise 2.4, 2.4.0.1, 2.4.0.2, 2.4.0.3, 2.4.04, 2.4.0.5 |

IBM Cloud Manager with OpenStack V4.1.0.6 through V4.1.0.6 ifix4 |

Consult the security bulletin Security Bulletin: Multiple security vulnerabilities in dnsmasq affect IBM Cloud Manager with OpenStack

Workarounds and Mitigations

None

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

Feb 13 2018: Original version 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. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. “Affected Products and Versions” referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

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