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AUSCERT External Security Bulletin Redistribution
ESB-2017.0598
Security Bulletin: Vulnerabilities in OpenSSL affect IBM Sterling
Connect:Direct for UNIX (CVE-2016-2177, CVE-2016-6306, CVE-2016-2183)
8 March 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Sterling Connect:Direct for UNIX
Publisher: IBM
Operating System: AIX
Linux variants
Solaris
HP-UX
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-6306 CVE-2016-2183 CVE-2016-2177
Reference: ESB-2017.0563
ESB-2017.0539
ESB-2017.0502
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg21999357
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Security Bulletin: Vulnerabilities in OpenSSL affect IBM Sterling
Connect:Direct for UNIX (CVE-2016-2177, CVE-2016-6306, CVE-2016-2183)
Security Bulletin
Document information
More support for: Sterling Connect:Direct for UNIX
Software version: 4.1
Operating system(s): AIX, HP-UX, Linux, Solaris
Reference #: 1999357
Modified date: 03 March 2017
Summary
OpenSSL vulnerabilities were disclosed on September 22 and 26, 2016 by
the OpenSSL Project. OpenSSL is used by IBM Sterling Connect:Direct for
UNIX. IBM Sterling Connect:Direct for UNIX has addressed the applicable CVEs.
Vulnerability Details
CVEID: CVE-2016-2177
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by the
incorrect use of pointer arithmetic for heap-buffer boundary checks. By
leveraging unexpected malloc behavior, a remote attacker could exploit
this vulnerability to trigger an integer overflow and cause the application
to crash.
CVSS Base Score: 5.9
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/113890 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2016-6306
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by missing
message length checks when parsing certificates. A remote authenticated
attacker could exploit this vulnerability to trigger an out-of-bounds read
and cause a denial of service.
CVSS Base Score: 4.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117112 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
CVEID: CVE-2016-2183
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by an error in the in the Triple-DES on 64-bit
block cipher, used as a part of the SSL/TLS protocol. By capturing large
amounts of encrypted traffic between the SSL/TLS server and the client,
a remote attacker able to conduct a man-in-the-middle attack could exploit
this vulnerability to recover the plaintext data and obtain sensitive
information. This vulnerability is known as the SWEET32 Birthday attack.
CVSS Base Score: 3.7
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/116337 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:N/A:N)
Affected Products and Versions
IBM Sterling Connect:Direct for Unix 4.1.0
Remediation/Fixes
V.R.M.F APAR Remediation/First Fix
4.1.0 IT18697 Apply 4.1.0.4.iFix085, available on Fix Central
Alternatively, upgrade to version 4.2.0, which is not affected by the
vulnerability.
Important note
IBM strongly suggests that all System z customers be subscribed to the
System z Security Portal to receive the latest critical System z security
and integrity service. If you are not subscribed, see the instructions
on the System z Security web site. Security and integrity APARs and
associated fixes will be posted to this portal. IBM suggests reviewing
the CVSS scores and applying all security or integrity fixes as soon as
possible to minimize any potential risk.
References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
None
Change History
3 March 2017: 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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