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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.3899
       Security Bulletin: IBM WebSphere MQ for HP NonStop Server is
              affected by OpenSSL vulnerability CVE-2021-3711
                             16 November 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           WebSphere MQ
Publisher:         IBM
Operating System:  Network Appliance
                   HPE NonStop
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-3711  

Reference:         ASB-2021.0237
                   ASB-2021.0198
                   ESB-2021.3878
                   ESB-2021.3201
                   ESB-2021.2890

Original Bulletin: 
   https://www.ibm.com/support/pages/node/6516398

- --------------------------BEGIN INCLUDED TEXT--------------------

IBM WebSphere MQ for HP NonStop Server is affected by OpenSSL vulnerability
CVE-2021-3711

Document Information

Document number    : 6516398
Modified date      : 14 November 2021
Product            : WebSphere MQ
Component          : Server
Software version   : 5.3.1
Operating system(s): HPE NonStop
Edition            : 5.3.1.0,5.3.1.1,5.3.1.2,5.3.1.3,5.3.1.4,5.3.1.5,5.3.1.6,5.3.1.7,5.3.1.8,5.3.1.9,5.3.1.10,5.3.1.11,5.3.1.12,5.3.1.13,5.3.1.14,5.3.1.15

Summary

A buffer overflow issue described by CVE-2021-3711 was identified in the
OpenSSL component of IBM WebSphere MQ.

Vulnerability Details

CVEID: CVE-2021-3711
DESCRIPTION: OpenSSL is vulnerable to a buffer overflow, caused by improper
bounds checking by the EVP_PKEY_decrypt() function within implementation of the
SM2 decryption. By sending specially crafted SM2 content, a remote attacker
could overflow a buffer and execute arbitrary code on the system or cause the
application to crash.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
208072 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

+----------------------------------------------------------+----------+
|Affected Product(s)                                       |Version(s)|
+----------------------------------------------------------+----------+
|WebSphere MQ V5.3 for HP NonStop Server (MIPS and Itanium)|5.3.1     |
+----------------------------------------------------------+----------+

Remediation/Fixes

+----------------------------------------------+-----------+---------+-------------------------------------+
|WebSphere MQ V5.3.1 for HPE NonStop           |5.3.1.17   |IT38363  |Apply patch for APAR IT38363         |
+----------------------------------------------+-----------+---------+-------------------------------------+

Workarounds and Mitigations

None

Change History

24 Oct 2021: Initial Publication

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