Security Bulletin: IBM Workload Scheduler is potentially vulnerable to denial of service due to CVE-2022-0778 affecting OpenSSL component

Summary

OpenSSL vulnerability CVE-2022-0778 has been disclosed by the OpenSSL Project. OpenSSL is used by IBM Workload Schedulerfor secure communications between the components.

Vulnerability Details

CVEID:CVE-2022-0778
**DESCRIPTION:**OpenSSL is vulnerable to a denial of service, caused by a flaw in the BN_mod_sqrt() function when parsing certificates. By using a specially-crafted certificate with invalid explicit curve parameters, a remote attacker could exploit this vulnerability to cause an infinite loop, and results in a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/221911 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)

Affected Products and Versions

Remediation/Fixes

APAR IJ38960 has been opened to address the openssl vulnerability for IBM Workload Scheduler.
APAR IJ38960 has been included in 9.5.0.6 fixpack. New fixpack can be downloaded from FixCentral at the page

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%7ETivoli&product=ibm/Tivoli/Tivoli+Workload+Scheduler&release=9.5.0&platform=All&function=all

filtering for FP0006.

For release 9.4, the apar is available on FixCentral for download, to be applied on top of 9.4.0.7.

It can be downloaded from the page

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Tivoli&product=ibm/Tivoli/Tivoli+Workload+Scheduler&release=9.4.0&platform=All&function=all

filtering the fix number IJ38960 and selecting the required operating system.

For Unsupported releases IBM recommends upgrading to a fixed, supported release of the product.

Workarounds and Mitigations

None