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AUSCERT External Security Bulletin Redistribution
ESB-2024.2619
IBM MQ Advanced Message Security on IBM i platform is affected by multiple
issues in OpenSSL (CVE-2023-6237 and CVE-2024-0727)
29 April 2024
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AusCERT Security Bulletin Summary
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Product: IBM MQ
Publisher: IBM
Operating System: IBM i
Resolution: Patch/Upgrade
CVE Names: CVE-2023-6237 CVE-2024-0727
Original Bulletin:
https://www.ibm.com/support/pages/node/7149584
Comment: CVSS (Max): 3.1 CVE-2024-0727 (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L)
CVSS Source: IBM
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
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Security Bulletin: IBM MQ Advanced Message Security on IBM i platform is
affected by multiple issues in OpenSSL (CVE-2023-6237 and CVE-2024-0727)
Document Information
Document number : 7149584
Modified date : 26 April 2024
Product : IBM MQ
Component : -
Software version : 9.0, 9.1, 9.2, 9.3
Operating system(s): IBM i
Security Bulletin
Summary
Multiple issues were identified with OpenSSL, which IBM MQ on the IBM i
platform uses within the Advanced Message Security feature to provide
cryptographic functionality. It is not used for transport layer security (TLS)
functionality for IBM MQ channel connections, which is provided by the IBM i
SystemTLS libraries.
Vulnerability Details
CVEID: CVE-2023-6237
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by a flaw in
the handling of RSA public keys by the EVP_PKEY_public_check() function. By
persuading a victim to sue a specially crafted RSA public keys for
verification, a remote attacker could exploit this vulnerability to cause long
delays, and results in a denial of service condition.
CVSS Base score: 3.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
279450 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L)
CVEID: CVE-2024-0727
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by improper
input validation. By persuading a victim to open a specially crafted PKCS12
file, a remote attacker could exploit this vulnerability to cause the
application to crash.
CVSS Base score: 3.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
280532 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L)
Affected Products and Versions
+--------------------+----------+
|Affected Product(s) |Version(s)|
+--------------------+----------+
|IBM MQ |9.0 LTS |
+--------------------+----------+
|IBM MQ |9.1 LTS |
+--------------------+----------+
|IBM MQ |9.2 LTS |
+--------------------+----------+
|IBM MQ |9.3 LTS |
+--------------------+----------+
The following installable MQ components are affected by the vulnerability:
- Advanced Message Security (AMS)
If you are running any of these listed components, please apply the remediation
/fixes as described below. For more information on the definitions of
components used in this list see https://www.ibm.com/support/pages/
installable-component-names-used-ibm-mq-security-bulletins
Remediation/Fixes
This issue was addressed under APAR SE81096
IBM MQ version 9.0 LTS
Apply Cumulative Security Update 9.0.0.24
IBM MQ version 9.1 LTS
Apply Cumulative Security Update 9.1.0.21
IBM MQ version 9.2 LTS
Apply Fix Pack 9.2.0.25
IBM MQ version 9.3 LTS
Apply Cumulative Security Update 9.3.0.17
Workarounds and Mitigations
None
26 Apr 2024: Initial Publication
Change History
*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
According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY
OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF
ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to
address potential vulnerabilities, IBM periodically updates the record of
components contained in our product offerings. As part of that effort, if IBM
identifies previously unidentified packages in a product/service inventory, we
address relevant vulnerabilities regardless of CVE date. Inclusion of an older
CVEID does not demonstrate that the referenced product has been used by IBM
since that date, nor that IBM was aware of a vulnerability as of that date. We
are making clients aware of relevant vulnerabilities as we become aware of
them. "Affected Products and Versions" referenced in IBM Security Bulletins are
intended to be only products and versions that are supported by IBM and have
not passed their end-of-support or warranty date. Thus, failure to reference
unsupported or extended-support products and versions in this Security Bulletin
does not constitute a determination by IBM that they are unaffected by the
vulnerability. Reference to one or more unsupported versions in this Security
Bulletin shall not create an obligation for IBM to provide fixes for any
unsupported or extended-support products or versions.
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