Security Bulletin: IBM Cloud Pak for Data is vulnerable to regular expression denial of service due to Rack ( CVE-2023-27539 )

Summary

Rack is used by IBM Cloud Pak for Data as part of the platform. CVE-2023-27539.

Vulnerability Details

CVEID:CVE-2023-27539
**DESCRIPTION:**Rack is vulnerable to a denial of service, caused by a regular expression denial of service (ReDoS) flaw in the header parsing component. By sending a specially crafted regex input, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/250384 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

Affected Product(s)|**Version(s)
**
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IBM Cloud Pak for Data| 4.0.0-4.8.4

Remediation/Fixes

IBM****strongly recommends addressing the vulnerability now.

Product(s)

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Version(s) number and/or range

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Remediation/Fix/Instructions

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IBM Cloud Pak for Data

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4.0.0-4.8.4

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Download 4.8.5 and follow instructions

Workarounds and Mitigations

None