CVE-2021-42555 : What You Need to Know

Pexip Infinity before 26.2 allows temporary remote Denial of Service (abort) due to missing call-setup input validation.

Understanding CVE-2021-42555

What is CVE-2021-42555?

Pexip Infinity software version prior to 26.2 is susceptible to a temporary remote Denial of Service attack caused by the absence of proper call-setup input validation.

The Impact of CVE-2021-42555

This vulnerability can be exploited remotely, leading to a temporary Denial of Service (DoS) condition on the affected system.

Technical Details of CVE-2021-42555

Vulnerability Description

The issue stems from the inadequate validation of call-setup inputs within Pexip Infinity, allowing attackers to exploit this flaw.

Affected Systems and Versions

Product: Pexip Infinity
Vendor: Not applicable
Versions Affected: All versions before 26.2

Exploitation Mechanism

Attackers can send malicious call-setup inputs to trigger the vulnerability, resulting in a temporary remote DoS condition.

Mitigation and Prevention

Immediate Steps to Take

Apply the necessary patches or updates provided by Pexip promptly.
Implement network-level controls to filter out potentially malicious traffic.

Long-Term Security Practices

Regularly update Pexip Infinity software to the latest version to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.

Patching and Updates

Update Pexip Infinity to version 26.2 or higher to patch the vulnerability and enhance system security.