CVE-2021-34994 : Exploit Details and Defense Strategies

This CVE-2021-34994 article provides an in-depth understanding of a critical vulnerability in Commvault CommCell 11.22.22 allowing remote code execution and its impact, technical details, and mitigation steps.

Understanding CVE-2021-34994

This section delves into the specifics of the CVE-2021-34994 vulnerability affecting Commvault's CommCell version 11.22.22.

What is CVE-2021-34994?

CVE-2021-34994 is a vulnerability in Commvault CommCell 11.22.22 that enables remote attackers to execute arbitrary code by bypassing the authentication mechanism.

The Impact of CVE-2021-34994

The vulnerability has a high impact, allowing attackers to execute Java code within the context of NETWORK SERVICE due to improper validation of user-supplied strings.

Technical Details of CVE-2021-34994

This section outlines the technical specifics of the CVE-2021-34994 vulnerability.

Vulnerability Description

The flaw exists within the DataProvider class due to improper validation of user input, ultimately leading to the execution of Java code by attackers.

Affected Systems and Versions

CommCell version 11.22.22 by Commvault is specifically affected by this vulnerability.

Exploitation Mechanism

Remote attackers can exploit this vulnerability to execute arbitrary code by escaping the JavaScript sandbox.

Mitigation and Prevention

In response to CVE-2021-34994, immediate actions and long-term security practices are vital to safeguard systems.

Immediate Steps to Take

Organizations should apply patches and validate the authentication mechanisms to prevent unauthorized code execution.

Long-Term Security Practices

Implement strict input validation practices and regularly update security protocols to mitigate similar vulnerabilities in the future.

Patching and Updates

Commvault users should promptly apply the latest security patches released by the vendor to address CVE-2021-34994.