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Security Bulletin: A vulnerability in IBM® Runtime Environments Java™ Technology Edition Versions affects IBM® Db2®. (January 2021 CPU)

Security Bulletin


Summary

There are multiple vulnerabilities in IBM® Runtime Environments Java™ Technology Edition, Versions 7.0.10.55 and earlier, 7.1.4.55 and earlier, 8.0.6.0 and earlier used by IBM® Db2®. These issues were disclosed as part of the IBM® SDKs Java™ Technology Edition updates in Jan 2021.

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)

Affected Products and Versions

All product versions on Linux and AIX are impacted.  Windows is not impacted.

Affected Product(s)Version(s)
DB29.7.x
DB210.1.x
DB210.5.x
DB211.1.x
DB211.5.x

Remediation/Fixes

The recommended solution is to apply the appropriate fix for this vulnerability.

The fix for this vulnerability is in the latest version of IBM JDK. Customers running any vulnerable fixpack level of an affected Program can download the latest version of IBM JDK from Fix Central.
 

Affected IBM® SDKs Java™ Technology Edition, Versions :

  • 7.0.10.75 and earlier
  • 7.1.4.75 and earlier
  • 8.0.6.20 and earlier
  • Earlier releases (6, 5.0, 1.4.2, 1.3.1, 1.2.2 etc.) may also be affected, but they are no longer supported.


Fixes for applicable vulnerabilities are included in IBM® SDKs Java™ Technology Edition, Versions :

  • 7.0.10.80
  • 7.1.4.80
  • 8.0.6.25

HP is now shipping their JDK fixes twice a year, hence there is no fix available for HP-UX. The bulletin will be updated when it becomes available.

Refer to the table below to determine the IBM JDK level that contains the fix. Then follow the instructions below to perform the JDK installation.

Db2 ReleaseFixed IBM Release
v9.7.x
7.0.10.80 or later
V10.1.x7.0.10.80 or later
V10.5.x7.0.10.80 or later
V11.1.x8.0.6.25 or later
V11.5.x8.0.6.25 or later

Instructions for IBM JDK Installation can be found here:
http://www.ibm.com/support/docview.wss?uid=swg27050993


Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Change History

22 Apr 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

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.

Document Location

Worldwide

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Document Information

Modified date:
22 April 2021

UID

ibm16446277