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AUSCERT External Security Bulletin Redistribution
ESB-2016.3012
Security Bulletin: Vulnerabilities in OpenSSL affect IBM
Tealeaf Customer Experience
19 December 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Tealeaf Customer Experience
Publisher: IBM
Operating System: Windows
Linux variants
Virtualisation
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-6307 CVE-2016-6305 CVE-2016-6304
CVE-2016-2178 CVE-2016-2177
Reference: ASB-2016.0098
ASB-2016.0095
ESB-2016.2997
ESB-2016.2993
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg21994861
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Security Bulletin: Vulnerabilities in OpenSSL affect IBM Tealeaf Customer
Experience
Security Bulletin
Document information
More support for:
Tealeaf Customer Experience
Software version:
Version Independent
Operating system(s):
Platform Independent
Reference #:
1994861
Modified date:
16 December 2016
Summary
OpenSSL vulnerabilities were disclosed on September 22 and 26, 2016 by the
OpenSSL Project. OpenSSL is used by IBM Tealeaf Customer Experience. IBM
Tealeaf Customer Experience has addressed the applicable CVEs.
Vulnerability Details
CVEID:
CVE-2016-6304
DESCRIPTION:
OpenSSL is vulnerable to a denial of service, caused by multiple memory leaks
in t1_lib.c during session renegotiation. By sending an overly large OCSP
Status Request extension, a remote attacker could exploit this vulnerability
to consume all available memory resources.
CVSS Base Score: 7.5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117110
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID:
CVE-2016-6305
DESCRIPTION:
OpenSSL is vulnerable to a denial of service, caused by an error in
SSL_peek(). By sending specially crafted data, a remote authenticated
attacker could exploit this vulnerability to cause the service to hang.
CVSS Base Score: 4.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117111
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-2016-2177
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-2016-2178
DESCRIPTION:
OpenSSL could allow a remote attacker to obtain sensitive information, caused
by an error in the DSA implementation that allows the following of a non-
constant time codepath for certain operations. An attacker could exploit this
vulnerability using a cache-timing attack to recover the private DSA key.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/113889
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-2016-6307
DESCRIPTION:
OpenSSL is vulnerable to a denial of service, caused by a memory allocation
error in the logic prior to the excessive message length check. By initiating
multiple connection attempts, a remote authenticated attacker could send an
overly large message to exhaust all available memory resources.
CVSS Base Score: 4.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117113
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)
Affected Products and Versions
IBM Tealeaf Customer Experience 8.0-8.6, 9.0.0, 9.0.2
Remediation/Fixes
Product VRMF Remediation/First Fix
IBM Tealeaf Customer Experience 9.0.2A PCA: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=9.0.2A_IBMTealeaf_PCA-3732-8_FixPack
Tealeaf CX: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=9.0.2.5249_9.0.2A_IBMTealeaf_CXUpgrade_FixPack4
IBM Tealeaf Customer Experience 9.0.2 PCA: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=9.0.2_IBMTealeaf_PCA-3682-8_FixPack
Tealeaf CX: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=9.0.2.1254_IBMTealeaf_CXUpgrade_FixPack4
IBM Tealeaf Customer Experience 9.0.0, 9.0.0A IBM recommends upgrading to a later supported version of the product. You can contact the Technical Support team for guidance.
IBM Tealeaf Customer Experience 8.0-8.6 IBM recommends upgrading to a later supported version of the product. You can contact the Technical Support team for guidance.
Workarounds and Mitigations
Network access to Tealeaf systems should be limited as much as possible.
You can contact the Technical Support team for further guidance.
References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
16 December 2016: 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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