Security Bulletin: Multiple vulnerabilities in OpenSSL may affect IBM Workload Scheduler

Summary

OpenSSL vulnerabilities CVE-2021-23840, and CVE-2021-23841 have been disclosed by the OpenSSL Project. OpenSSL is used by IBM Workload Scheduler. IBM Workload Scheduler has addressed the CVE

Vulnerability Details

CVEID:CVE-2021-23840
**DESCRIPTION:**OpenSSL is vulnerable to a denial of service, caused by an integer overflow in CipherUpdate. By sending an overly long argument, an attacker could exploit this vulnerability to cause the application to crash.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/196848 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)

CVEID:CVE-2021-23841
**DESCRIPTION:**OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference in the X509_issuer_and_serial_hash() function. By parsing the issuer field, an attacker could exploit this vulnerability to cause the application to crash.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/196847 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 IJ30802 has been opened to address the openssl vulnerabilities for IBM Workload Scheduler.
APAR IJ30802 has been included in 9.5.0.04. For release 9.4, the apar is available on FixCentral for download, to be applied on top of 9.4.0.07.
For Unsupported releases IBM recommends upgrading to a fixed, supported release of the product.

Workarounds and Mitigations

None