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CVE-2021-1528 : Security Advisory and Response

Learn about CVE-2021-1528, a critical privilege escalation vulnerability in Cisco SD-WAN Software that allows attackers to gain elevated privileges. Find out the impact, affected systems, and mitigation steps.

A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to gain elevated privileges on an affected system. This could result in unauthorized access and actions with the privileges of the root user.

Understanding CVE-2021-1528

This CVE identifies a privilege escalation vulnerability in Cisco SD-WAN Software.

What is CVE-2021-1528?

CVE-2021-1528 is a vulnerability in Cisco SD-WAN Software that enables an authenticated, local attacker to elevate their privileges on the system.

The Impact of CVE-2021-1528

The impact of this vulnerability is rated as high, with the potential for attackers to gain elevated privileges and perform unauthorized actions.

Technical Details of CVE-2021-1528

This section provides technical details related to the vulnerability.

Vulnerability Description

The vulnerability arises from insufficient restrictions on access to privileged processes within Cisco SD-WAN Software.

Affected Systems and Versions

The affected product is the Cisco SD-WAN Solution. All versions are impacted due to this privilege escalation vulnerability.

Exploitation Mechanism

Attackers could exploit this vulnerability by invoking a privileged process on the affected system, potentially resulting in unauthorized actions with elevated privileges.

Mitigation and Prevention

Protecting systems from CVE-2021-1528 requires immediate action and long-term security measures.

Immediate Steps to Take

It is recommended to apply patches or updates provided by Cisco to mitigate the vulnerability. Additionally, restrict access to the CLI to authorized personnel only.

Long-Term Security Practices

Maintain a proactive approach to security by regularly updating software, implementing access controls, and monitoring for any unauthorized activities.

Patching and Updates

Stay informed about security advisories from Cisco and promptly apply any patches or updates to ensure the protection of systems.

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