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             AUSCERT External Security Bulletin Redistribution

 Security Bulletin: IBM MQ is vulnerable to a denial of service attack due
       to an error within the Data Conversion logic. (CVE-2020-4310)
                               29 June 2020


        AusCERT Security Bulletin Summary

Product:           IBM MQ Appliance
Publisher:         IBM
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-4310  

Original Bulletin: 

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IBM MQ is vulnerable to a denial of service attack due to an error within the
Data Conversion logic. (CVE-2020-4310)

Security Bulletin


An issue was found within the data conversion logic that could cause a SIGSEGV
and denial of service.

Vulnerability Details

CVEID: CVE-2020-4310
DESCRIPTION: IBM MQ and MQ Appliance 7.1, 7.5, 8.0, 9.0 LTS, 9.1 LTS, and 9.1
CD are vulnerable to a denial of service attack due to an error within the Data
Conversion logic. IBM X-Force ID: 177081.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
177081 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

|Affected Product(s) |Version(s)|
|IBM MQ Appliance    |8.0       |
|IBM MQ Appliance    |9.1 LTS   |
|IBM MQ Appliance    |9.1 CD    |


IBM MQ Appliance 8
Apply FixPack

IBM MQ Appliance 9.1 LTS
Apply FixPack

IBM MQ Appliance 9.1 CD
Apply FixPack 9.1.5

Workarounds and Mitigations


Get Notified about Future Security Bulletins


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