CVE-2023-33850: IBM GSKit-Crypto information disclosure

Published Aug 22, 2023
·
Updated

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.

Affected Software

25 affected components
IBM TXSeries for Multiplatform=8.1
IBM TXSeries for Multiplatform=9.1
IBM AIX
Linux Linux kernel
IBM TXSeries for Multiplatform=8.2
HP HP-UX
Microsoft Windows
IBM CICS TX=11.1
IBM CICS TX=10.1
IBM CICS TX=11.1
All of the following
Any of the following
IBM TXSeries for Multiplatform=8.1
IBM TXSeries for Multiplatform=9.1
Any of the following
IBM AIX
Linux Linux kernel
All of the following
IBM TXSeries for Multiplatform=8.2
Any of the following
HP HP-UX
IBM AIX
Linux Linux kernel
Microsoft Windows
All of the following
IBM CICS TX=11.1
Linux Linux kernel
All of the following
Any of the following
IBM CICS TX=10.1
IBM CICS TX=11.1
Linux Linux kernel
IBM InfoSphere Data Architect<=9.2.1

Event History

Aug 22, 2023
CVE Published
via MITRE·08:31 PM
Data Sourced
via MITRE·08:31 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·09:15 PM
DescriptionSeverityWeaknessAffected Software
Mar 4, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is CVE-2023-33850?

CVE-2023-33850 is a vulnerability in IBM GSKit-Crypto that allows a remote attacker to obtain sensitive information through a timing-based side channel in the RSA Decryption implementation.

2

How does CVE-2023-33850 work?

CVE-2023-33850 works by sending an overly large number of trial messages for decryption, which can be exploited by an attacker to obtain sensitive information.

3

What is the severity of CVE-2023-33850?

CVE-2023-33850 has a severity rating of 7.5 (high).

4

Which software products are affected by CVE-2023-33850?

IBM TXSeries for Multiplatforms versions 8.1, 8.2, and 9.1 are affected by CVE-2023-33850.

5

How can I fix CVE-2023-33850?

To fix CVE-2023-33850, apply the appropriate patch provided by IBM for your version of IBM TXSeries for Multiplatforms.

Contact

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