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
| Affected Software | Affected Version | How to fix |
|---|---|---|
| IBM Cognos Controller | <=11.0.0 - 11.0.1 | |
| All of | ||
| Any of | ||
| IBM TXSeries for Multiplatforms | =8.1 | |
| IBM TXSeries for Multiplatforms | =9.1 | |
| Any of | ||
| IBM AIX | ||
| Linux Kernel | ||
| All of | ||
| IBM TXSeries for Multiplatforms | =8.2 | |
| Any of | ||
| HPE HP-UX | ||
| IBM AIX | ||
| Linux Kernel | ||
| Microsoft Windows | ||
| All of | ||
| IBM CICS Transaction Server for z/OS | =11.1 | |
| Linux Kernel | ||
| All of | ||
| Any of | ||
| IBM CICS Transaction Server for z/OS | =10.1 | |
| IBM CICS Transaction Server for z/OS | =11.1 | |
| Linux Kernel | ||
| IBM TXSeries for Multiplatforms | =8.1 | |
| IBM TXSeries for Multiplatforms | =9.1 | |
| IBM AIX | ||
| Linux Kernel | ||
| IBM TXSeries for Multiplatforms | =8.2 | |
| HPE HP-UX | ||
| Microsoft Windows | ||
| IBM CICS Transaction Server for z/OS | =11.1 | |
| IBM CICS Transaction Server for z/OS | =10.1 | |
| IBM CICS Transaction Server for z/OS | =11.1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
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.
- agent/author
- agent/type
- agent/weakness
- agent/title
- agent/first-publish-date
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/severity
- agent/last-modified-date
- agent/description
- agent/trending
- agent/source
- agent/tags
- agent/softwarecombine
- collector/ibm-support
- source/IBM
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-api
- source/NVD
- collector/nvd-index
- vendor/ibm
- canonical/ibm cognos controller
- version/ibm cognos controller/11.0.0 - 11.0.1
- canonical/ibm txseries for multiplatforms
- version/ibm txseries for multiplatforms/8.1
- version/ibm txseries for multiplatforms/9.1
- canonical/ibm aix
- vendor/linux
- canonical/linux kernel
- version/ibm txseries for multiplatforms/8.2
- vendor/hp
- canonical/hpe hp-ux
- vendor/microsoft
- canonical/microsoft windows
- canonical/ibm cics transaction server for z/os
- version/ibm cics transaction server for z/os/11.1
- version/ibm cics transaction server for z/os/10.1