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AUSCERT External Security Bulletin Redistribution
ESB-2023.0664
IBM MQ Blockchain bridge is vulnerable to an issue
identified in snakeyaml (CVE-2022-25857)
6 February 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM MQ
Publisher: IBM
Operating System: Windows
Linux variants
Resolution: Patch/Upgrade
CVE Names: CVE-2022-25857
Original Bulletin:
https://www.ibm.com/support/pages/node/6952185
Comment: CVSS (Max): 7.5 CVE-2022-25857 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVSS Source: IBM
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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Security Bulletin: IBM MQ Blockchain bridge is vulnerable to an issue
identified in snakeyaml (CVE-2022-25857)
Document Information
Document number : 6952185
Modified date : 03 February 2023
Product : IBM MQ
Component : Blockchain Bridge
Software version : 9.2.0, 9.3.0
Operating system(s): Linux
Windows
Security Bulletin
Summary
An issue was identified with the snakeyaml package that is used by the fabric
gateway package that is used by the IBM MQ Blockchain bridge package to provide
Blockchain functionality in IBM MQ.
Vulnerability Details
CVEID: CVE-2022-25857
DESCRIPTION: Java package org.yaml:snakeyam is vulnerable to a denial of
service, caused by missing to nested depth limitation for collections. By
sending a specially-crafted request, a remote attacker could exploit this
vulnerability to cause a denial of service.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
234864 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
+--------------------+----------+
|Affected Product(s) |Version(s)|
+--------------------+----------+
|IBM MQ |9.2 LTS |
+--------------------+----------+
|IBM MQ |9.3 LTS |
+--------------------+----------+
|IBM MQ |9.2 CD |
+--------------------+----------+
|IBM MQ |9.3 CD |
+--------------------+----------+
The following installable MQ components are affected by the vulnerability:
o IBM MQ Bridge to Blockchain
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 resolved under APAR IT42280
IBM MQ version 9.2 LTS
Apply FixPack 9.2.0.7
IBM MQ Version 9.3 LTS
Apply FixPack 9.3.0.2
IBM MQ version 9.2 CD and 9.3 CD
Upgrade to IBM MQ 9.3.1.0
Workarounds and Mitigations
None
Change History
02 Feb 2023: Initial Publication
*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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