What is CVE-2023-20021?

CVE-2023-20021 is a vulnerability in specific Cisco Identity Services Engine (ISE) CLI commands that could allow an authenticated, local attacker to perform command injection attacks and elevate privileges to root.

How severe is CVE-2023-20021?

CVE-2023-20021 has a severity value of 6.7, which is considered medium.

How can this vulnerability be exploited?

To exploit CVE-2023-20021, an attacker must have valid administrative credentials and be able to execute specially crafted commands through the Cisco ISE CLI.

Which version of Cisco Identity Services Engine (ISE) is affected by CVE-2023-20021?

CVE-2023-20021 affects Cisco Identity Services Engine (ISE) version 3.2.

How can I fix CVE-2023-20021?

To fix CVE-2023-20021, Cisco recommends upgrading to a fixed software release.

Vulnerability/
CVE-2023-20021

medium

6.7

CWE

78 77

5/4/2023

12/4/2023

CVE-2023-20021: OS Command Injection

First published: Wed Apr 05 2023(Updated: )

Multiple vulnerabilities in specific Cisco Identity Services Engine (ISE) CLI commands could allow an authenticated, local attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit these vulnerabilities, an attacker must have valid Administrator privileges on the affected device. These vulnerabilities are due to insufficient validation of user-supplied input. An attacker could exploit these vulnerabilities by submitting a crafted CLI command. A successful exploit could allow the attacker to elevate privileges to root.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco Identity Services Engine	=3.2

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Reference Links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-os-injection-pxhKsDM

Frequently Asked Questions

What is CVE-2023-20021?
CVE-2023-20021 is a vulnerability in specific Cisco Identity Services Engine (ISE) CLI commands that could allow an authenticated, local attacker to perform command injection attacks and elevate privileges to root.
How severe is CVE-2023-20021?
CVE-2023-20021 has a severity value of 6.7, which is considered medium.
How can this vulnerability be exploited?
To exploit CVE-2023-20021, an attacker must have valid administrative credentials and be able to execute specially crafted commands through the Cisco ISE CLI.
Which version of Cisco Identity Services Engine (ISE) is affected by CVE-2023-20021?
CVE-2023-20021 affects Cisco Identity Services Engine (ISE) version 3.2.
How can I fix CVE-2023-20021?
To fix CVE-2023-20021, Cisco recommends upgrading to a fixed software release.

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version/cisco identity services engine/3.2

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