What is the vulnerability ID?

The vulnerability ID is CVE-2021-43203.

Which software is affected by this vulnerability?

The vulnerability affects JetBrains Ktor version up to and excluding 1.6.4.

What is the severity of this vulnerability?

The severity of this vulnerability is high with a CVSS score of 7.5.

Is there any reference available for this vulnerability?

Yes, you can refer to the following link for more information: https://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021/

What is the vulnerability's Common Weakness Enumeration (CWE) ID?

The vulnerability is associated with CWE ID 287.

How can I fix this vulnerability?

To fix this vulnerability, it is recommended to upgrade JetBrains Ktor to version 1.6.4 or later.

Vulnerability/
CVE-2021-43203

high

7.5

CWE

287

9/11/2021

21/11/2024

CVE-2021-43203

Q: What is the title of the vulnerability?

The title of the vulnerability is 'In JetBrains Ktor before 1.6.4 nonce verification during the OAuth2 authentication process is implemented improperly.'

Q: What is the description of the vulnerability?

The description of the vulnerability is that nonce verification during the OAuth2 authentication process in JetBrains Ktor before version 1.6.4 is implemented improperly.

First published: Tue Nov 09 2021(Updated: )

In JetBrains Ktor before 1.6.4, nonce verification during the OAuth2 authentication process is implemented improperly.

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
JetBrains Ktor	<1.6.4
	<1.6.4

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Reference Links

https://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021/

Frequently Asked Questions

What is the vulnerability ID?
The vulnerability ID is CVE-2021-43203.
What is the title of the vulnerability?
The title of the vulnerability is 'In JetBrains Ktor before 1.6.4 nonce verification during the OAuth2 authentication process is implemented improperly.'
What is the description of the vulnerability?
The description of the vulnerability is that nonce verification during the OAuth2 authentication process in JetBrains Ktor before version 1.6.4 is implemented improperly.
Which software is affected by this vulnerability?
The vulnerability affects JetBrains Ktor version up to and excluding 1.6.4.
What is the severity of this vulnerability?
The severity of this vulnerability is high with a CVSS score of 7.5.
Is there any reference available for this vulnerability?
Yes, you can refer to the following link for more information: https://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021/
What is the vulnerability's Common Weakness Enumeration (CWE) ID?
The vulnerability is associated with CWE ID 287.
How can I fix this vulnerability?
To fix this vulnerability, it is recommended to upgrade JetBrains Ktor to version 1.6.4 or later.

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agent/last-modified-date
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canonical/jetbrains ktor

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