CVE-2021-1432 : Vulnerability Insights and Analysis
Discover how CVE-2021-1432 in Cisco IOS XE SD-WAN Software allows authenticated attackers to execute arbitrary commands as root. Learn its impact and mitigation.
A vulnerability in the CLI of Cisco IOS XE SD-WAN Software allows an authenticated attacker to execute arbitrary commands as the root user. The attacker needs to be authenticated as a low-privileged user on the affected device to exploit this flaw.
Understanding CVE-2021-1432
This section provides detailed insights into the implications and technical aspects of CVE-2021-1432.
What is CVE-2021-1432?
The vulnerability in Cisco IOS XE SD-WAN Software permits an authenticated, local attacker to run arbitrary commands as the root user due to insufficient validation of user input.
The Impact of CVE-2021-1432
Exploitation of this vulnerability could enable an attacker to execute malicious commands with elevated privileges on the affected system.
Technical Details of CVE-2021-1432
This section outlines the technical specifics of CVE-2021-1432.
Vulnerability Description
The flaw arises from inadequate validation of user-supplied input, allowing a low-privileged authenticated user to inject and execute arbitrary commands as the root user.
Affected Systems and Versions
Cisco IOS XE SD-WAN Software versions are affected by this vulnerability, where an attacker with low privileges can exploit the flaw.
Exploitation Mechanism
By injecting arbitrary commands to a file, a low-privileged attacker can escalate their permissions to execute commands as the root user.
Mitigation and Prevention
In this section, find essential steps to mitigate the risks associated with CVE-2021-1432.
Immediate Steps to Take
Administrators should ensure that device configurations are restricted to prevent unauthorized access and implement stringent user input validation.
Long-Term Security Practices
Regular security training for users and continuous monitoring of network activities are crucial to detect and respond to potential threats promptly.
Patching and Updates
Apply security patches and updates provided by Cisco to address the vulnerability in affected versions of Cisco IOS XE SD-WAN Software.