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Security Bulletin: Host header injection vulnerability in Business Automation Studio in Cloud Pak for Automation (CVE-2021-29872)

Security Bulletin


Business Automation Studio in IBM Cloud Pak for Automation is vulnerable to a host header injection attack.

Vulnerability Details

CVEID:   CVE-2021-29872
DESCRIPTION:   IBM ICP4A - Business Automation Studio Component is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. By sending a specially crafted HTTP request, a remote attacker could exploit this vulnerability to inject HTTP HOST header, which will allow the attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.
CVSS Base score: 5.4
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Cloud Pak for Automation

21.0.1 before IF007
21.0.2 before IF007

Note that 21.0.3 is not affected.


The recommended action is to upgrade to the latest cumulative security fix for your release and consider upgrading to the latest release.

Workarounds and Mitigations


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Change History

17 Jan 2022: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location


[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS7JTW","label":"IBM Cloud Pak for Automation"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"21.0.1, 21.0.2","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
17 January 2022