CVE-2021-1558 : Security Advisory and Response

Cisco DNA Spaces Connector is affected by multiple vulnerabilities that could allow an authenticated attacker to elevate privileges and execute arbitrary commands on the underlying operating system as root. These vulnerabilities stem from insufficient restrictions during the execution of certain CLI commands.

Understanding CVE-2021-1558

This CVE pertains to privilege escalation vulnerabilities in Cisco DNA Spaces Connector, potentially exploited by a local attacker to gain root access and execute unauthorized commands.

What is CVE-2021-1558?

The CVE-2021-1558 vulnerability in Cisco DNA Spaces Connector allows an authenticated local attacker to escalate privileges and run arbitrary commands on the system as root due to insufficient restrictions in certain CLI command executions.

The Impact of CVE-2021-1558

The impact of CVE-2021-1558 is significant as it enables an attacker to elevate privileges from a lower access level to root, potentially compromising the entire system's security.

Technical Details of CVE-2021-1558

This section delves into the specifics of the vulnerability, including its description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in Cisco DNA Spaces Connector arises from insufficient restrictions during the execution of specific CLI commands, allowing an attacker to perform unauthorized actions as root.

Affected Systems and Versions

The affected product is the Cisco DNA Spaces Connector with all versions being vulnerable to these privilege escalation issues.

Exploitation Mechanism

By leveraging the lack of restrictions during the execution of CLI commands, an attacker with local access can escalate their privileges and execute arbitrary commands on the system as root.

Mitigation and Prevention

To safeguard against CVE-2021-1558, immediate steps need to be taken along with the integration of long-term security practices and timely patching.

Immediate Steps to Take

Users should apply relevant security updates provided by Cisco to address the vulnerabilities in Cisco DNA Spaces Connector and prevent potential exploitation.

Long-Term Security Practices

Establishing robust security protocols, limiting access privileges, and monitoring CLI command executions can enhance overall system security and prevent unauthorized actions.

Patching and Updates

Regularly applying security patches and updates from Cisco is essential to mitigate the risk posed by CVE-2021-1558 and ensure the system's integrity.