Security Bulletin: IBM Watson Assistant for IBM Cloud Pak for Data is vulnerable to YAML denial of service vulnerabilitiy [CVE-2023-2251]

Summary

Potential YAML denial of service vulnerabilitiy have been identified that may affect IBM Watson Assistant for IBM Cloud Pak for Data. The vulnerability have been addressed. Refer to details for additional information. [CVE-2023-2251]

Vulnerability Details

CVEID:CVE-2023-2251
**DESCRIPTION:**YAML is vulnerable to a denial of service, caused by an uncaught exception in the parseDocument and parseAllDocuments functions. By sending a specially crafted input, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/253642 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

For all affected versions, IBM strongly recommends addressing the vulnerability now by upgrading to the latest (v4.7.0 or later releases) release of IBM Watson Assistant for IBM Cloud Pak for Data which maintains backward compatibility with the versions listed above.

Follow instructions for Installing Watson Assistant in Link to Release (v4.7.0 release information)

<https://www.ibm.com/docs/en/cloud-paks/cp-data/4.7.x&gt;

Workarounds and Mitigations

None