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Security Bulletin: IBM MQ Advanced Message Security is vulnerable to an OpenSSL Montgomery squaring function propagation flaw (CVE-2017-3736)

Created by Robert Parker on

Security Bulletin


Summary

IBM MQ and IBM WebSphere MQ are affected by an OpenSSL vulnerability which could allow a remote attacker to obtain sensitive information. This is caused by a carry propagation flaw in the the x86_64 Montgomery squaring function bn_sqrx8x_internal().

OpenSSL is used by IBM MQ Advanced Message Security on the IBM i platform only.

Vulnerability Details

CVEID: CVE-2017-3736
DESCRIPTION:
OpenSSL could allow a remote attacker to obtain sensitive information, caused by a carry propagation flaw in the the x86_64 Montgomery squaring function bn_sqrx8x_internal(). An attacker with online access to an unpatched system could exploit this vulnerability to obtain information about the private key.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/134397 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

IBM MQ v8.0

  • Maintenance levels 8.0.0.0 - 8.0.0.8

IBM MQ v9 LTS
  • Maintenance levels 9.0.0.0 - 9.0.0.2

Remediation/Fixes

IBM MQ v8.0


IBM MQ v9 LTS

Get Notified about Future Security Bulletins

References

Off

Change History

17 April 2018: Original version published
24 April 2018: Correct incorrect reference to v7.0.1 and v7.1 as these versions are not affected
25 April 2018: Made bulletin clearer that vulnerability only affects AMS on IBM i

*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.

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Document Information

Modified date:
19 August 2022

UID

swg22013025