Security Bulletin
Summary
IBM Common Cryptographic Architecture (CCA) could allow a remote user to cause a denial of service (CVE-2023-47150) or to obtain sensitive information (CVE-2023-33855) as described in the vulnerability details section. IBM customers who use the IBM 4769 Developer's Toolkit to create CCA User-Defined Extensions (UDXes) may be affected by these vulnerabilities.
Vulnerability Details
CVEID: CVE-2023-47150
DESCRIPTION: IBM Common Cryptographic Architecture (CCA) could allow a remote user to cause a denial of service due to incorrect data handling for certain types of AES operations.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/270602 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)
CVEID: CVE-2023-33855
DESCRIPTION: Under certain conditions, RSA operations performed by IBM Common Cryptographic Architecture (CCA) may exhibit non-constant-time behavior. This could allow a remote attacker to obtain sensitive information using a timing-based attack.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/257676 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM 4769 Developers Toolkit | 7.0.0 - 7.5.36 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability by upgrading to the latest toolkit
| Product | Fixed Version |
| IBM 4769 Developers Toolkit | 7.5.37 or later |
Customers should contact their toolkit provider to obtain the latest toolkit.
Workarounds and Mitigations
IBM recommends that all toolkit customers upgrade to the latest version of the IBM 4769 Developer's Toolkit.
The listed vulnerabilities affect certain types of RSA (CVE-2023-33855) and AES (CVE-2023-47150) operations performed by the IBM Common Cryptographic Architecture (CCA). An IBM 4769 Developer's Toolkit customer who creates custom firmware images that are CCA User-Defined Extensions (UDXes) might be affected. However, an IBM 4769 Developer's Toolkit customer who does not create UDXes would not be affected.
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
25 Mar 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.
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.
Document Location
Worldwide
Was this topic helpful?
Document Information
Modified date:
25 March 2024
Initial Publish date:
25 March 2024
UID
ibm17145170