CVE-2021-1384 : Exploit Details and Defense Strategies

A vulnerability in Cisco IOx application hosting environment of Cisco IOS XE Software could allow an authenticated, remote attacker to inject commands into the underlying operating system as the root user.

Understanding CVE-2021-1384

This CVE refers to a command injection vulnerability in Cisco IOx for IOS XE Software, potentially enabling unauthorized access to system commands.

What is CVE-2021-1384?

The vulnerability allows an authenticated attacker to inject commands as the root user into the underlying operating system due to incomplete validation of fields in application packages loaded onto IOx.

The Impact of CVE-2021-1384

If exploited, an attacker could perform command injection, gaining high confidentiality and integrity impact on affected systems.

Technical Details of CVE-2021-1384

This section outlines vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The flaw arises from inadequate validation of application packages, enabling a crafted application .tar file to trigger command injection upon device loading.

Affected Systems and Versions

The vulnerability affects all versions of Cisco IOS XE Software operating with Cisco IOx application hosting environment.

Exploitation Mechanism

To exploit this vulnerability, an attacker needs to create a malicious application .tar file and load it onto the device.

Mitigation and Prevention

Learn about immediate actions and long-term security practices to mitigate this vulnerability.

Immediate Steps to Take

Upon vulnerability discovery, ensure the restriction of unauthorized access and thoroughly inspect application package inputs.

Long-Term Security Practices

Implement stringent security controls, regularly monitor for anomalous activities, and conduct periodic security assessments.

Patching and Updates

Apply vendor-recommended patches promptly to mitigate the vulnerability and enhance system security.