CVE-2021-36299 : Exploit Details and Defense Strategies

A SQL injection vulnerability has been identified in Dell iDRAC9 versions 4.40.00.00 and later, but prior to 4.40.29.00 and 5.00.00.00. This CVE was made public on September 9, 2021, with a CVSS base score of 7.1 (High).

Understanding CVE-2021-36299

This section delves into the details of the SQL injection vulnerability affecting Dell's iDRAC9.

What is CVE-2021-36299?

The CVE-2021-36299 involves an SQL injection vulnerability in Dell iDRAC9 versions, allowing a remote authenticated user to potentially exploit the flaw to disclose information or perform denial of service attacks.

The Impact of CVE-2021-36299

The vulnerability poses a high risk with a CVSS base score of 7.1, affecting confidentiality and availability, though integrity impact is none.

Technical Details of CVE-2021-36299

Let's explore the technical aspects of CVE-2021-36299.

Vulnerability Description

The vulnerability arises due to improper neutralization of special elements in an SQL command, leaving the system susceptible to SQL injection attacks.

Affected Systems and Versions

Integrated Dell Remote Access Controller (iDRAC) versions 4.40.00.00 and later, but prior to 4.40.29.00 and 5.00.00.00 are affected.

Exploitation Mechanism

A remote authenticated malicious user with low privileges can exploit the SQL injection vulnerability by providing specially crafted input data to the affected Dell iDRAC application.

Mitigation and Prevention

Here are the crucial steps to mitigate and prevent exploitation of CVE-2021-36299.

Immediate Steps to Take

Update the affected iDRAC installations to version 4.40.29.00 or higher to patch the vulnerability.
Limit network access to the iDRAC interface to authorized users only.

Long-Term Security Practices

Regularly monitor for security advisories and patches from Dell.
Implement network segmentation to restrict unauthorized access to critical systems.

Patching and Updates

Apply security patches provided by Dell promptly to address known vulnerabilities and enhance system security.