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AUSCERT External Security Bulletin Redistribution
IBM Security Bulletin: This Power System update is being
released to address CVE-2018-12384
20 March 2019
AusCERT Security Bulletin Summary
Product: Power 9 Systems
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2018-12384
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This Power System update is being released to address CVE-2018-12384
Product: Power 9 Systems
Software version: FW920
Operating system(s): Firmware
Reference #: 0873162
POWER9: In response to a data leak vulnerability in the network security
services, a new Power Systems firmware update is being released to address
Common Vulnerabilities and Exposures issue number CVE-2018-12384.
This man-in-the-middle attack could provide false completion or errant network
transactions or exposure of sensitive data from intercepted SSL connections to
ASMI, Redfish, or the service processor message server.
DESCRIPTION: Network Security Services (NSS) could allow a remote attacker to
obtain sensitive information, caused by the improper handling of an
SSLv2-compatible ClientHello message. By conducting a passive replay attack, an
attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base Score: 4.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
150436 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)
Affected Products and Versions
Firmware release FW920 is affected.
Customers with the products below, install FW920.30
1) IBM Power Systems E950(9040-MR9)
2) IBM Power Systems E980(9080-M9S)
Complete CVSS v3 Guide
On-line Calculator v3
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
*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.
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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