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Security Bulletin: IBM WebSphere MQIPT Session IDs are predictable (CVE-2015-0173)

Security Bulletin


The MQIPT Session IDs for HTTP communication that are generated by MQIPT V2.0 and later are predictable.

Vulnerability Details

CVEID: CVE-2015-0173
IBM WebSphere MQ Internet Pass-Thru HTTP connection management contains a security flaw which could allow interception of MQ message data for non-HTTPS connections.
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)

Affected Products and Versions

IBM WebSphere MQ Internet Pass-Thru (SupportPac MS81)

  • Versions and earlier


Replace/upgrade MQIPT installations to IBM WebSphere MQ Internet Pass-Thru or later.

Workarounds and Mitigations

Configure MQIPT to enable HTTPS and avoid using HTTP sessions.

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Change History

11th June 2015: 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.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Document Information

Modified date:
15 June 2018