CVE-2021-34995 : What You Need to Know

This CVE-2021-34995 affects Commvault CommCell version 11.22.22 and allows remote attackers to execute arbitrary code. The vulnerability exists in the DownloadCenterUploadHandler class due to improper validation of user-supplied data.

Understanding CVE-2021-34995

This vulnerability enables attackers to run malicious code on affected CommCell installations by exploiting a flaw in the DownloadCenterUploadHandler class.

What is CVE-2021-34995?

The CVE-2021-34995 vulnerability in Commvault CommCell 11.22.22 allows remote attackers to execute arbitrary code by bypassing the authentication mechanism. The flaw occurs due to inadequate validation of user data, enabling the upload of arbitrary files.

The Impact of CVE-2021-34995

The impact of this vulnerability is rated as high severity with a CVSS base score of 8.8. Attackers can exploit this to execute code in the context of the NETWORK SERVICE.

Technical Details of CVE-2021-34995

This section dives deeper into the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from the lack of proper validation of user-supplied data, allowing the upload of malicious files.

Affected Systems and Versions

Commvault CommCell version 11.22.22 is specifically affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this flaw to execute arbitrary code in the context of NETWORK SERVICE.

Mitigation and Prevention

Efforts to mitigate and prevent the exploitation of CVE-2021-34995.

Immediate Steps to Take

Users should apply security patches promptly to address this vulnerability and prevent potential exploitation.

Long-Term Security Practices

Implement robust security measures and best practices to safeguard against similar vulnerabilities in the future.

Patching and Updates

Regularly check for security updates from Commvault and apply them as soon as they are available.