CVE-2021-30490 : What You Need to Know

ViewPower (aka ViewPowerHTML) versions 1.04-21012 through 1.04-21353 are affected by a vulnerability that allows an Authenticated User to escalate privileges through insecure permissions on the service binary.

Understanding CVE-2021-30490

This CVE ID pertains to a privilege escalation issue in the upsMonitor component of ViewPower software.

What is CVE-2021-30490?

The vulnerability in ViewPower software versions 1.04-21012 through 1.04-21353 enables an Authenticated User to modify files due to insecure permissions on the service binary, leading to privilege escalation.

The Impact of CVE-2021-30490

An attacker with authenticated access can exploit this vulnerability to elevate their privileges on the system, potentially gaining unauthorized control over critical files or functions.

Technical Details of CVE-2021-30490

This section outlines specific technical details regarding the vulnerability.

Vulnerability Description

The insecure permissions on the service binary in ViewPower software versions 1.04-21012 through 1.04-21353 allow an Authenticated User to modify files, facilitating privilege escalation attacks.

Affected Systems and Versions

ViewPower versions 1.04-21012 through 1.04-21353 are confirmed to be affected by this privilege escalation vulnerability.

Exploitation Mechanism

By leveraging the insecure permissions present on the service binary, an Authenticated User can manipulate files within the ViewPower software, thereby escalating their privileges on the system.

Mitigation and Prevention

To address and prevent exploitation of CVE-2021-30490, the following steps are recommended:

Immediate Steps to Take

Apply security patches or updates provided by the software vendor promptly.
Restrict access to vulnerable components to authorized personnel only.

Long-Term Security Practices

Regularly monitor and audit user permissions and file integrity within the ViewPower software.
Conduct security training for personnel to raise awareness about privilege escalation risks.

Patching and Updates

Stay informed about official security advisories and updates released by the ViewPower software vendor. Implement patches as soon as they are available to mitigate the privilege escalation vulnerability effectively.