CVE-2021-42126 Explained : Impact and Mitigation

An improper authorization control vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform privilege escalation.

Understanding CVE-2021-42126

This CVE pertains to an improper authorization control vulnerability in Ivanti Avalanche before version 6.3.3, potentially enabling privilege escalation for attackers.

What is CVE-2021-42126?

CVE-2021-42126 is an improper authorization control vulnerability in Ivanti Avalanche, allowing unauthorized privilege escalation via the Inforail Service.

The Impact of CVE-2021-42126

This vulnerability could be exploited by attackers with access to Inforail Service to elevate their privileges, potentially leading to unauthorized actions on the affected system.

Technical Details of CVE-2021-42126

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Vulnerability Type: Improper Authorization (CWE-285)
Description: An improper authorization control vulnerability exists in Ivanti Avalanche, enabling privilege escalation.

Affected Systems and Versions

Product: Ivanti Avalanche
Versions Affected: 6.3.3

Exploitation Mechanism

The vulnerability allows attackers with access to the Inforail Service to escalate their privileges and potentially gain unauthorized control of the system.

Mitigation and Prevention

To address CVE-2021-42126, follow these mitigation and prevention measures.

Immediate Steps to Take

Upgrade Ivanti Avalanche to version 6.3.3 to mitigate the vulnerability.
Monitor system logs for any unauthorized access attempts.

Long-Term Security Practices

Implement the principle of least privilege to restrict access.
Conduct regular security assessments and audits.

Patching and Updates

Apply security patches promptly to mitigate known vulnerabilities.