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AUSCERT External Security Bulletin Redistribution
ESB-2015.0644
Security Bulletin: Vulnerabilities in GSKit affect Host
On-Demand (CVE-2015-0138)
17 March 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Rational Host On-Demand
Publisher: IBM
Operating System: AIX
HP-UX
Linux variants
Solaris
Windows
i5/OS
z/OS
HP Itanium
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-0138
Reference: ESB-2015.0632
ESB-2015.0589
ESB-2015.0542
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21699016
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Security Bulletin: Vulnerabilities in GSKit affect Host On-Demand
(CVE-2015-0138)
Document information
More support for:
Rational Host On-Demand
General Information
Software version:
11.0, 11.0.1.0, 11.0.2.0, 11.0.3.0, 11.0.4.0, 11.0.5.0, 11.0.5.1, 11.0.6,
11.0.6.1, 11.0.7, 11.0.8, 11.0.9, 11.0.10, 11.0.11
Operating system(s):
AIX, HP Itanium, HP-UX, Linux, Linux iSeries, Linux on System z, Linux
pSeries, OS/400, Solaris, Windows, i5/OS, z/OS
Reference #:
1699016
Modified date:
2015-03-16
Security Bulletin
Summary
GSKit is an IBM component that is used by Host On-Demand.The GSKit that is
shipped with Host On-Demand contains multiple security vulnerabilities
including the FREAK: Factoring Attack on RSA-EXPORT keys" TLS/SSL client and
server vulnerability. Host On-Demand has addressed the applicable CVEs.
Vulnerability Details
CVEID: CVE-2015-0138
DESCRIPTION: A vulnerability in various IBM SSL/TLS implementations could
allow a remote attacker to downgrade the security of certain SSL/TLS
connections. An IBM SSL/TLS client implementation could accept the use of an
RSA temporary key in a non-export RSA key exchange ciphersuite. This could
allow a remote attacker using man-in-the-middle techniques to facilitate
brute-force decryption of TLS/SSL traffic between vulnerable clients and
servers.
This vulnerability is also known as the FREAK attack.
CVSS Base Score: 4.3
CVSS Temporal Score: See
http://exchange.xforce.ibmcloud.com/#/vulnerabilities/100691 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Affected Products and Versions
Host On Demand 11.0.12 and earlier
Remediation/Fixes
Product VRMF Remediation/First Fix
Host On-Demand 11.0.13 To be announced
For IBM Rational Host On-Demand 11.0.12 and before, IBM recommends upgrading
to IBM Rational Host On-Demand 11.0.13, scheduled to be released on 23rd March
2015.
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
Subscribe to My Notifications to be notified of important product support
alerts like this.
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 Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
None
Change History
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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