Security Bulletin
Summary
IBM Unified Extensible Firmware Interface (UEFI) allows a privileged user to configure the system in a legacy boot mode would cause a temporary denial of service.
Vulnerability Details
Summary
IBM Unified Extensible Firmware Interface (UEFI) allows a privileged user to configure the system in a legacy boot mode that would cause a temporary denial of service.
Vulnerability Details
CVE-ID: CVE-2014-4768
Description: IBM Unified Extensible Firmware Interface allows a privileged user to configure the system in a legacy boot mode that would cause a temporary denial of service.
CVSS Base Score: 2.1
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/94834
for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:H/Au:S/C:N/I:N/A:P)
Affected products and versions
| Product | Affected firmware levels |
|---|---|
| IBM Flex System x880 X6 MTM 4259,7903 | ibm_fw_uefi_n2e108n ibm_fw_uefi_n2e108m |
| System x3850 X6 / x3950 X6 MTM 3837,3839 | ibm_fw_uefi_a8e112B ibm_fw_uefi_a8e112A ibm_fw_uefi_a8e110A ibm_fw_uefi_a8e108M ibm_fw_uefi_a8e108L ibm_fw_uefi_a8e104U ibm_fw_uefi_a8e104T ibm_fw_uefi_a8e104S |
Remediation/Fixes
It is recommended to update to the firmware level listed below, or later version. Firmware updates are available through IBM Fix Central: http://www.ibm.com/support/fixcentral/.
You should verify applying this fix does not cause any compatibility issues.
| Product | Fixed firmware level |
|---|---|
| IBM Flex System x880 X6 MTM 4259,7903 | ibm_fw_uefi_n2e112h-1.00 or later |
| System x3850 X6 / x3950 X6 MTM 3837,3839 | ibm_fw_uefi_a8e114h-1.00 or later |
Workarounds and Mitigations
None.
Reference
Related Information
IBM
Secure Engineering Web Portal
IBM Product Security
Incident Response Blog
Acknowledgement
None.
Change History
04 June 2015: Original Copy 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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References
*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:
30 January 2019
UID
ibm1MIGR-5098278