IBM WebSphere MQ Security Vulnerability: Potential TLS protocol vulnerability - "Lucky Thirteen" (CVE-2013-0169)

Flash (Alert)


IBM WebSphere MQ Security Vulnerability: The TLS protocol, which is used when running MQ channels with TLS cipherspecs does not properly consider timing side-channel attacks on a MAC check requirement during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, aka the Lucky Thirteen issue.



CVE ID: CVE-2013-0169

There is the potential for encrypted data to be deciphered or altered when flowing across MQ channels using the TLS protocol when using the provided IBM JRE 5.0 runtime.

If MQ Java client applications are not using the JRE provided by MQ, users should seek preventative maintenance from their JRE provider.

CVSS Base Score: 4.3
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
*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 Flash.


  • IBM WebSphere MQ 7.0.1 Java clients when using the provided IBM JRE 5.0
  • IBM WebSphere MQ 7.1 Java clients when using the provided IBM JRE 6.0
  • IBM WebSphere MQ 7.5 Java clients when using the provided IBM JRE 6.0
This vulnerability is addressed in IBM JRE 5.0 SR16-FP2, earlier maintenance levels are vulnerable to the exploit.

This vulnerability also exists in IBM JRE 6.0 which is provided by IBM WebSphere MQ 7.1 and 7.5, please refer to this other security bulletin (published by IBM on May 3rd, 2013) for remediation.

The recommended solution is to apply the fix for each named product as soon as practical. Please see below for information on the fixes available.

IBM WebSphere MQ 7.0.1
Apply fix pack when available. In the interim apply APAR IC93129

IBM WebSphere MQ 7.1
Please refer to the security bulletin for this product and IBM JRE 6.0.

IBM WebSphere MQ 7.5
Please refer to the security bulletin for this product and IBM JRE 6.0.

None known; apply fixes.

None known

Complete CVSS Guide (
On-line Calculator V2 (
X-Force Vulnerability Database (
CVE-2013-3028 (

10th July 2013: Original Copy Published

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.

Document information

More support for:

WebSphere MQ

Software version:

7.0.1,,,,,,,,,,, 7.1,,, 7.5,

Operating system(s):

AIX, HP-UX, Linux, Linux Red Hat - i/p Series, Linux Red Hat - xSeries, Linux Red Hat - zSeries, Linux SUSE - xSeries, Linux SUSE - zSeries, Linux SuSE - i/p Series, Linux iSeries, Linux on Power, Linux zSeries, Solaris, UNIX, Windows

Software edition:

All Editions

Reference #:


Modified date:


Translate my page

Content navigation