What is CVE-2021-27768?

CVE-2021-27768 is a vulnerability that allows for a Man-in-the-Middle (MITM) attack, indicating a lack of hostname verification.

How does CVE-2021-27768 work?

CVE-2021-27768 works by intercepting network traffic using a proxy server set up in 'transparent' mode, allowing for sensitive account information to be intercepted.

What is the severity of CVE-2021-27768?

The severity of CVE-2021-27768 is medium with a severity value of 5.9.

Which software is affected by CVE-2021-27768?

The Hcltech Verse application with a version up to and excluding 12.0.9 is affected by CVE-2021-27768.

How can CVE-2021-27768 be fixed?

To fix CVE-2021-27768, it is recommended to enable proper hostname verification in the application's network traffic.

Vulnerability/
CVE-2021-27768

medium

6.3

CWE

295 300

11/4/2022

3/8/2024

CVE-2021-27768: An SSL certificate host verification vulnerability affects HCL Verse for Android

First published: Mon Apr 11 2022(Updated: )

Using the ability to perform a Man-in-the-Middle (MITM) attack, which indicates a lack of hostname verification, sensitive account information was able to be intercepted. In this specific scenario, the application's network traffic was intercepted using a proxy server set up in 'transparent' mode while a certificate with an invalid hostname was active. The Android application was found to have hostname verification issues during the server setup and login flows; however, the application did not process requests post-login.

Credit: psirt@hcl.com

Affected Software	Affected Version	How to fix
Hcltech Verse	<12.0.9

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Reference Links

https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097753

Frequently Asked Questions

What is CVE-2021-27768?
CVE-2021-27768 is a vulnerability that allows for a Man-in-the-Middle (MITM) attack, indicating a lack of hostname verification.
How does CVE-2021-27768 work?
CVE-2021-27768 works by intercepting network traffic using a proxy server set up in 'transparent' mode, allowing for sensitive account information to be intercepted.
What is the severity of CVE-2021-27768?
The severity of CVE-2021-27768 is medium with a severity value of 5.9.
Which software is affected by CVE-2021-27768?
The Hcltech Verse application with a version up to and excluding 12.0.9 is affected by CVE-2021-27768.
How can CVE-2021-27768 be fixed?
To fix CVE-2021-27768, it is recommended to enable proper hostname verification in the application's network traffic.

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