CVE-2021-42129 : Exploit Details and Defense Strategies

A command injection vulnerability in Ivanti Avalanche before version 6.3.3 allows unauthorized execution of commands by attackers.

Understanding CVE-2021-42129

This CVE discloses a critical vulnerability in Ivanti Avalanche, enabling arbitrary command execution.

What is CVE-2021-42129?

CVE-2021-42129 is a command injection flaw in Ivanti Avalanche that permits attackers with Inforail Service access to execute malicious commands.

The Impact of CVE-2021-42129

The vulnerability allows attackers to run arbitrary commands on the system, potentially leading to unauthorized operations and data breaches.

Technical Details of CVE-2021-42129

This section provides technical insights into the CVE.

Vulnerability Description

A command injection vulnerability in Ivanti Avalanche (pre-6.3.3) enables unauthorized command execution through the Inforail Service.

Affected Systems and Versions

Product: Ivanti Avalanche
Version: 6.3.3

Exploitation Mechanism

The attacker needs access to the Inforail Service to leverage the vulnerability and execute arbitrary commands.

Mitigation and Prevention

Protect your systems from CVE-2021-42129 with the following measures:

Immediate Steps to Take

Update Ivanti Avalanche to version 6.3.3 or later.
Restrict access to the Inforail Service.

Long-Term Security Practices

Implement principle of least privilege.
Regularly monitor for unusual activities.

Patching and Updates

Apply security patches and updates promptly to safeguard against known vulnerabilities.