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AUSCERT External Security Bulletin Redistribution
IBM Security Bulletin: Kernel Buffer Overflow in IBM
Security Trusteer Rapport for MacOS (CVE-2018-1985)
1 March 2019
AusCERT Security Bulletin Summary
Product: IBM Security Trusteer Rapport
Operating System: Mac OS
Impact/Access: Root Compromise -- Existing Account
Denial of Service -- Existing Account
CVE Names: CVE-2018-1985
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Kernel Buffer Overflow in IBM Security Trusteer Rapport for MacOS
Product: IBM Security Trusteer Rapport
Software version: 3.6.1908.22
Operating system(s): OS X
Reference #: 0869212
IBM Security Trusteer Rapport for MacOS is bundled with a driver which has a
buffer overflow vulnerability. The affected driver was removed from the
o CVEID: CVE-2018-1985
DESCRIPTION: IBM Trusteer Rapport/Apex contains an unused legacy driver
which could allow a user with administrator privileges to cause a buffer
overflow that could result in a kernel panic or arbitrary code execution.
CVSS Base Score: 4.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/
vulnerabilities/154207 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
IBMSecurity Rapport for MacOS with version below 3.6.1908.26.
IBMSecurity Rapport for MacOS version3.6.1908.26 and higher does not include
the vulnerable driver. IBM pushed the new version of Rapport to end users,
which addresses this vulnerability and includes other updates, by January 6,
2019. As with any updates to the Rapport agent, we recommend that customers
continue to reinforce messaging that their end users reboot their machines to
incorporate the upgrade.
Workarounds and Mitigations
Complete CVSS v3 Guide
On-line Calculator v3
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
The vulnerability was reported to IBM by Neil Kettle of Trustwave.
*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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