Security Bulletin
Summary
IBM MQ Appliance has resolved a Java SE vulnerability.
Vulnerability Details
CVEID: CVE-2020-27221
DESCRIPTION: Eclipse OpenJ9 is vulnerable to a stack-based buffer overflow when the virtual machine or JNI natives are converting from UTF-8 characters to platform encoding. By sending an overly long string, 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/195353 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)
DESCRIPTION: Eclipse OpenJ9 is vulnerable to a stack-based buffer overflow when the virtual machine or JNI natives are converting from UTF-8 characters to platform encoding. By sending an overly long string, 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/195353 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) |
| IBM MQ Appliance | 9.2 CD |
| IBM MQ Appliance | 9.2 LTS |
| IBM MQ Appliance | 9.1 CD |
| IBM MQ Appliance | 9.1 LTS |
Remediation/Fixes
This vulnerability is addressed by APARs IT35811 and IT35540
IBM MQ Appliance version 9.1 LTS
Apply iFix IT35811, or later.
IBM MQ Appliance version 9.2 LTS
Apply fixpack 9.2.0.2, or later.
IBM MQ Appliance version 9.1 CD and 9.2 CD
Upgrade to 9.2.2 CD release, or later.
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Off
Change History
20 May 2021: 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
24 May 2021
UID
ibm16455619