Security Bulletin: Timing Oracle in RSA Decryption vulnerability might affect GSKit supplied with IBM TXSeries for Multiplatforms.

Summary

Timing Oracle in RSA Decryption vulnerability might affect GSKit supplied with IBM TXSeries for Multiplatforms. IBM TXSeries for Multiplatforms has addressed the applicable vulnerabilities.

Vulnerability Details

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.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/257132 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

Remediation/Fixes

8.1

| Linux, AIX| PSIRT fixes for TXSeries 8.1 will be provided only for extended support customers with request through Salesforce case
IBM TXSeries for Multiplatforms|

8.2

| Linux, AIX, HP, Windows| Fix Central Link
IBM TXSeries for Multiplatforms|

9.1

| Linux, AIX| Fix Central Link

Workarounds and Mitigations

None