ESB-2019.0641 - [Mac] IBM Security Trusteer Rapport: Multiple vulnerabilities 2019-03-01

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0641
           IBM Security Bulletin: Kernel Buffer Overflow in IBM
            Security Trusteer Rapport for MacOS (CVE-2018-1985)
                               1 March 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Security Trusteer Rapport
Publisher:         IBM
Operating System:  Mac OS
Impact/Access:     Root Compromise   -- Existing Account
                   Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1985  

Reference:         ESB-2019.0320.2
                   ESB-2019.0314
                   ESB-2019.0254
                   ESB-2019.0207
                   ESB-2019.0118

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10869212

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Kernel Buffer Overflow in IBM Security Trusteer Rapport for MacOS
(CVE-2018-1985)

Product:             IBM Security Trusteer Rapport

Software version:    3.6.1908.22

Operating system(s): OS X

Reference #:         0869212

Security Bulletin

Summary

IBM Security Trusteer Rapport for MacOS is bundled with a driver which has a
buffer overflow vulnerability. The affected driver was removed from the
package.

Vulnerability Details

  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.

Remediation/Fixes

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

None.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

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.

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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