CVE-2022-20851 Explained : Impact and Mitigation
Learn about CVE-2022-20851, a vulnerability in Cisco IOS XE Software that allows remote attackers to execute arbitrary commands with root privileges. Find out how to mitigate and prevent this security risk.
A vulnerability in the web UI feature of Cisco IOS XE Software could allow an authenticated, remote attacker to perform an injection attack against an affected device. This could result in the execution of arbitrary commands with root privileges on the underlying operating system.
Understanding CVE-2022-20851
This section provides insights into the nature and impact of the vulnerability.
What is CVE-2022-20851?
The vulnerability in Cisco IOS XE Software allows an attacker with valid Administrator privileges to execute arbitrary commands on the affected device.
The Impact of CVE-2022-20851
The impact of this vulnerability is rated as medium severity with a CVSS base score of 5.5. It allows attackers to exploit insufficient input validation in the web UI feature, resulting in a command injection attack.
Technical Details of CVE-2022-20851
This section delves into the technical aspects of CVE-2022-20851.
Vulnerability Description
The vulnerability stems from insufficient input validation in the web UI feature of Cisco IOS XE Software, enabling attackers to send crafted input to the web UI API.
Affected Systems and Versions
The affected product is Cisco IOS XE Software, and all versions are susceptible to this vulnerability.
Exploitation Mechanism
An attacker with valid Administrator privileges can exploit this vulnerability by sending crafted input to the web UI API, leading to the execution of arbitrary commands on the underlying operating system with root privileges.
Mitigation and Prevention
This section offers guidance on mitigating and preventing the exploitation of CVE-2022-20851.
Immediate Steps to Take
It is recommended to apply the necessary security patches provided by Cisco to address this vulnerability. Furthermore, restrict access to trusted administrators only.
Long-Term Security Practices
To enhance security posture, implement the principle of least privilege, conduct regular security audits, and keep systems up to date with the latest security patches.
Patching and Updates
Stay informed about security advisories from Cisco and promptly apply relevant patches and updates to ensure the protection of your systems.