CVE-2023-33850: IBM GSKit-Crypto information disclosure
First published: Tue 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. IBM X-Force ID: 257132.
Credit: psirt@us.ibm.com psirt@us.ibm.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 | |
| IBM CICS TX Advanced | <=10.1 | |
| IBM CICS TX Advanced | <=11.1 | |
| All of | ||
| Any of | ||
| IBM TXSeries for Multiplatform | =8.1 | |
| IBM TXSeries for Multiplatform | =9.1 | |
| Any of | ||
| IBM AIX | ||
| Linux Linux kernel | ||
| All of | ||
| IBM TXSeries for Multiplatform | =8.2 | |
| Any of | ||
| HP HP-UX | ||
| IBM AIX | ||
| Linux Linux kernel | ||
| Microsoft Windows | ||
| All of | ||
| IBM CICS TX | =11.1 | |
| Linux Linux kernel | ||
| All of | ||
| Any of | ||
| IBM CICS TX | =10.1 | |
| IBM CICS TX | =11.1 | |
| Linux Linux kernel |
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Reference Links
Frequently Asked Questions
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.
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.
What is the severity of CVE-2023-33850?
CVE-2023-33850 has a severity rating of 7.5 (high).
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.
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.
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