CVE-2021-36325 : What You Need to Know

A local authenticated malicious user exploit in Dell BIOS allows arbitrary code execution in SMRAM using an SMI.

Understanding CVE-2021-36325

This CVE involves an improper input validation vulnerability in Dell BIOS that could lead to severe consequences if exploited.

What is CVE-2021-36325?

The CVE-2021-36325 vulnerability in Dell BIOS enables a local authenticated attacker to execute arbitrary code by leveraging an SMI in the SMRAM.

The Impact of CVE-2021-36325

The impact of this vulnerability is rated as HIGH, with the potential for unauthorized access to confidential data and compromising system integrity.

Technical Details of CVE-2021-36325

In-depth information on the specifics of the CVE.

Vulnerability Description

The vulnerability arises from improper input validation in Dell BIOS, opening the door for a malicious user to exploit an SMI and execute arbitrary code in SMRAM.

Affected Systems and Versions

CPG BIOS versions less than 1.13.0 are susceptible to this vulnerability.

Exploitation Mechanism

A local authenticated attacker can abuse an SMI to trigger arbitrary code execution in the SMRAM, taking advantage of the improper input validation in Dell BIOS.

Mitigation and Prevention

Crucial steps to secure systems and prevent exploitation.

Immediate Steps to Take

Users should apply patches provided by Dell promptly to mitigate the risks associated with CVE-2021-36325.

Long-Term Security Practices

Regularly updating BIOS versions, implementing access controls, and monitoring SMI usage can help prevent unauthorized code execution.

Patching and Updates

Staying informed about security alerts and promptly applying patches released by the vendor are essential for safeguarding systems against known vulnerabilities.