CVE-2021-25650 : What You Need to Know

A privilege escalation vulnerability was discovered in Avaya Aura Utility Services, potentially allowing a local user to execute specially crafted scripts as a privileged user. This vulnerability affects all 7.x versions of Avaya Aura Utility Services.

Understanding CVE-2021-25650

This section provides insights into the impact, technical details, and mitigation strategies related to the privilege escalation vulnerability in Avaya Aura Utility Services.

What is CVE-2021-25650?

CVE-2021-25650 is a privilege escalation vulnerability in Avaya Aura Utility Services that enables a local user to execute malicious scripts as a privileged user. The affected versions include Avaya Aura Utility Services 7.0.0.0 up to version 7.1.3.8.

The Impact of CVE-2021-25650

The vulnerability has a CVSSv3.1 base score of 7.7, indicating a high severity level. It poses a significant risk to confidentiality, integrity, and high privileges required, making it crucial to address promptly.

Technical Details of CVE-2021-25650

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

Vulnerability Description

The vulnerability allows a local user to escalate privileges and execute specially crafted scripts on the system, potentially leading to unauthorized access and control.

Affected Systems and Versions

Avaya Aura Utility Services versions 7.0.0.0 through 7.1.3.8 are confirmed to be affected by this privilege escalation vulnerability.

Exploitation Mechanism

An attacker with local access can exploit this vulnerability to run malicious scripts with elevated privileges, gaining unauthorized control over the system.

Mitigation and Prevention

This section outlines the immediate steps to take and long-term security practices to mitigate the risks associated with CVE-2021-25650.

Immediate Steps to Take

Apply patches and updates provided by Avaya to address the vulnerability promptly.
Restrict local user access and monitor system activities for any suspicious behavior.

Long-Term Security Practices

Implement the principle of least privilege to limit user permissions and access rights.
Conduct regular security audits and assessments to identify and address potential vulnerabilities proactively.

Patching and Updates

Avaya may release patches to fix the privilege escalation flaw. It is imperative to apply these updates as soon as possible to secure your systems against potential exploits.