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Security Bulletin: Multiple vulnerabilities in IBM Java SDK and IBM Java Runtime affect IBM® Db2®. (Jan 2024 CPU)

Security Bulletin


There are multiple vulnerabilities in IBM® Runtime Environment Java™ Version and earlier, and earlier used by IBM® Db2®. These issues were disclosed as part of the IBM Java SDK updates in January 2024.

Vulnerability Details

CVEID:   CVE-2024-20952
DESCRIPTION:   An unspecified vulnerability in Java SE related to the Security component could allow a remote attacker to cause high confidentiality impact and high integrity impact.
CVSS Base score: 7.4
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)

CVEID:   CVE-2023-33850
DESCRIPTION:   IBM GSKit-Crypto could allow a remote attacker to obtain sensitive information, caused by a timing-based side channel in the RSA Decryption implementation. By sending an overly large number of trial messages for decryption, an attacker could exploit this vulnerability to obtain sensitive information. IBM X-Force ID: 257132.
CVSS Base score: 7.5
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions


Affected Product(s)Version(s)Applicable Editions
IBM® Db2®


Client and Server

IBM® Db2®


Client and Server

IBM® Db2®


Client and Server


All platforms are affected.
Earlier releases (10.1, 9.7 etc.) may also be affected, but they are no longer supported. 


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.

Affected IBM SDK, Java Technology Edition, Version:

  • and earlier
  • and earlier
  • Earlier releases (7.0, 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 SDK, Java Technology Edition:

  • for all Db2 releases


Customers running any vulnerable fixpack level of an affected Program, V10.5, V11.1 or V11.5, can download the latest version of IBM JDK from Fix Central.

Instructions for IBM JDK Installation can be found here: 

IBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. IBM does not want to enable a malicious attacker with sufficient knowledge to craft an exploit of the vulnerability.



Workarounds and Mitigations


Get Notified about Future Security Bulletins




Change History

27 Feb 2024: 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.


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.

Document Location


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Document Information

Modified date:
27 February 2024