What is CVE-2021-27760?

CVE-2021-27760 is a vulnerability in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients that allows an authenticated user to execute remote code on another chat client.

How severe is CVE-2021-27760?

CVE-2021-27760 has a severity rating of 5.5 (medium).

Which software versions are affected by CVE-2021-27760?

CVE-2021-27760 affects the following versions of Hcltech Hcl Inotes: 11.0.0, 11.0.1, 11.0.1-fixpack1, 11.0.1-fixpack2, 11.0.1-fixpack3, and 11.0.1-fixpack4.

How can I fix CVE-2021-27760?

To fix CVE-2021-27760, update your Hcltech Hcl Inotes software to version 11.0.1-fixpack4 or apply the necessary patches provided by HCL Technologies.

Where can I find more information about CVE-2021-27760?

You can find more information about CVE-2021-27760 at https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097670.

Vulnerability/
CVE-2021-27760

medium

CWE

6/5/2022

17/9/2024

CVE-2021-27760: HCL Notes 11.0 - 11.0.1 FP4 Sametime Embedded chat clients are vulnerable to group chats loading script on restart

First published: Fri May 06 2022(Updated: )

An issue was discovered in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients. An authenticated Sametime chat user could cause Remote Code Execution on another chat client by sending a specially formatted message through chat containing Javascript code.

Credit: psirt@hcl.com

Affected Software	Affected Version	How to fix
Hcltech Hcl Inotes	=11.0.0
Hcltech Hcl Inotes	=11.0.1
Hcltech Hcl Inotes	=11.0.1-fixpack1
Hcltech Hcl Inotes	=11.0.1-fixpack2
Hcltech Hcl Inotes	=11.0.1-fixpack3
Hcltech Hcl Inotes	=11.0.1-fixpack4

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Reference Links

https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097670

Frequently Asked Questions

What is CVE-2021-27760?
CVE-2021-27760 is a vulnerability in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients that allows an authenticated user to execute remote code on another chat client.
How severe is CVE-2021-27760?
CVE-2021-27760 has a severity rating of 5.5 (medium).
Which software versions are affected by CVE-2021-27760?
CVE-2021-27760 affects the following versions of Hcltech Hcl Inotes: 11.0.0, 11.0.1, 11.0.1-fixpack1, 11.0.1-fixpack2, 11.0.1-fixpack3, and 11.0.1-fixpack4.
How can I fix CVE-2021-27760?
To fix CVE-2021-27760, update your Hcltech Hcl Inotes software to version 11.0.1-fixpack4 or apply the necessary patches provided by HCL Technologies.
Where can I find more information about CVE-2021-27760?
You can find more information about CVE-2021-27760 at https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097670.

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vendor/hcltech
canonical/hcltech hcl inotes
version/hcltech hcl inotes/11.0.0
version/hcltech hcl inotes/11.0.1
version/hcltech hcl inotes/11.0.1-fixpack1
version/hcltech hcl inotes/11.0.1-fixpack2
version/hcltech hcl inotes/11.0.1-fixpack3
version/hcltech hcl inotes/11.0.1-fixpack4

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