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AUSCERT External Security Bulletin Redistribution
ESB-2018.0874
Security Bulletin: Multiple Vulnerabilities in GSKit Affect
IBM Sterling Connect:Direct for Microsoft Windows
27 March 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Sterling Connect
Publisher: IBM
Operating System: Windows
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-1428 CVE-2018-1427 CVE-2017-3736
CVE-2017-3732
Reference: ASB-2018.0033
ASB-2018.0019
ASB-2018.0013
ASB-2017.0209
ASB-2017.0174
ASB-2017.0123
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg22013519
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: Multiple Vulnerabilities in GSKit Affect IBM Sterling
Connect:Direct for Microsoft Windows
Security Bulletin
Document information
More support for: Sterling Connect:Direct for Microsoft Windows
Software version: 4.7
Operating system(s): Windows
Reference #: 2013519
Modified date: 26 March 2018
Summary
Vulnerabilities have been found in the IBM GSKit component used by IBM Sterling
Connect:Direct for Microsoft Windows. IBM Sterling Connect:Direct for Microsoft
Windows has addressed the applicable CVEs.
Vulnerability Details
CVEID: CVE-2017-3732
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by a carry propagating bug in the x86_64 Montgomery
squaring procedure. An attacker could exploit this vulnerability to obtain
information about the private key.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
121313 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID: CVE-2017-3736
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by a carry propagation flaw in the x86_64 Montgomery
squaring function bn_sqrx8x_internal(). An attacker with online access to an
unpatched system could exploit this vulnerability to obtain information about
the private key.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
134397 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2018-1427
DESCRIPTION: IBM GSKit contains several environment variables that a local
attacker could overflow and cause a denial of service.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
139072 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2018-1428
DESCRIPTION: IBM GSKit uses weaker than expected cryptographic algorithms that
could allow an attacker to decrypt highly sensitive information.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
139073 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
Affected Products and Versions
IBM Sterling Connect:Direct for Microsoft Windows 4.7.0.0 through
4.7.0.5_iFix012
Remediation/Fixes
+----------------------------+------+-------+---------------------------------+
|Product |VRMF |APAR |Remediation/First Fix |
+----------------------------+------+-------+---------------------------------+
|IBM Sterling Connect:Direct |4.7.0 |IT24136|Apply 4.7.0.5_iFix013, available |
|for Microsoft Windows | | |on Fix Central |
+----------------------------+------+-------+---------------------------------+
For older versions/releases IBM recommends upgrading to a fixed, supported
version/release of the product.
Workarounds and Mitigations
CVE-2017-3732, CVE-2017-3736: Use only TLS_ECDHE_ECDSA... CipherSuites
Others: None
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alerts like this.
References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
26 March 2018: 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.
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