Security Bulletin: A security vulnerability has been identified in Red Hat® Enterprise Linux (RHEL) Server shipped with PurePower Integrated Manager (PPIM) (CVE-2017-6462 CVE-2017-6463 CVE-2017-6464)

Summary

RHEL Server is shipped as a component of PPIM. This bulletin addresses these vulnerabilities.

Vulnerability Details

CVEID:** CVE-2017-6462
DESCRIPTION:** NTP is vulnerable to a denial of service, caused by a buffer overflow in the legacy Datum Programmable Time Server refclock driver. By sending specially crafted packets, a local authenticated attacker could exploit this vulnerability to overflow a buffer and cause a denial of service.
CVSS Base Score: 1.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123611 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L)

CVEID:** CVE-2017-6463
DESCRIPTION:** NTP is vulnerable to a denial of service. By sending an invalid setting, a remote authenticated attacker could exploit this vulnerability using the :config directive to cause the daemon to crash.
CVSS Base Score: 4.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123612 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H)

CVEID: CVE-2017-6464**
DESCRIPTION:** NTP is vulnerable to a denial of service. A remote authenticated attacker could exploit this vulnerability using a malformed mode configuration directive to cause the application to crash.
CVSS Base Score: 4.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123610 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H)

Affected Products and Versions

Principal Product and Version(s)

• PurePower Integrated Manager Appliance 1.1.0, 1.1.0.1, 1.1.0.2, 1.2.0, 1.2.0.1, 1.2.0.2, 1.2.0.3, 1.2.0.4
• • PurePower Integrated Manager Service Appliance 1.1.0, 1.1.0.1, 1.1.0.2, 1.2.0, 1.2.0.1, 1.2.0.2, 1.2.0.3, 1.2.0.4
• • PurePower Integrated Manager Power VC Appliance 1.1.0, 1.1.0.1, 1.1.0.2, 1.2.0, 1.2.0.1, 1.2.0.2, 1.2.0.3, 1.2.0.4
• • PurePower Integrated Manager KVM Host 1.1.0 , 1.1.0.1, 1.1.0.2, 1.2.0, 1.2.0.1, 1.2.0.2, 1.2.0.3, 1.2.0.4

Remediation/Fixes

None

Workarounds and Mitigations

Properly monitor your ntpd instances, and auto-restart ntpd (without -g) if it stops running.

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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

16 May 2017 : 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.

Internal Use Only

8181 PRID : 93406

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