IBM Support

Security Bulletin: Malformed client flows abend MQTT channel (CVE-2015-4943, CVE-2015-4941, CVE-2015-4942)

Security Bulletin


Summary

A number of malformed MQTT client flows could be issued by a malicious user to cause the MQXR service to abend and require manual restart.

Vulnerability Details

CVEID: CVE-2015-4943
DESCRIPTION:
IBM WebSphere MQ could allow a remote attacker to crash the MQXR service using a sequence of connect and disconnects which will have to be restarted.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104516 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2015-4941
DESCRIPTION:
IBM WebSphere MQ could allow a remote attacker to crash the MQXR service due to incorrect handling of abbreviated TLS handshake.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104514 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2015-4942
DESCRIPTION:
IBM WebSphere MQ could allow a remote attacker to crash the MQXR service using a sequence of connect and disconnects which will have to be restarted.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104515 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

Affected Products and Versions

IBM WebSphere MQ 8.0

- IBM WebSphere MQ 8.0.0.3 and earlier maintenance levels

IBM WebSphere MQ 7.5

- IBM WebSphere MQ 7.5.0.5 and earlier maintenance levels

IBM WebSphere MQ 7.1

- IBM WebSphere MQ 7.1.0.6 and earlier maintenance levels

Remediation/Fixes

WebSphere MQ 8.0

- Apply fixpack 8.0.0.4

WebSphere MQ 7.5

- Apply interim ifix IT09866

WebSphere MQ 7.1

- Apply fixpack 7.1.0.7

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Reported to IBM by Codenomicon at http://www.codenomicon.com/

Change History

01 February 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

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

[{"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"WMQ Telemetry","Platform":[{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"8.0;7.5;7.1","Edition":"Advanced","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
15 June 2018

UID

swg21972012