CVE-2021-33123 : Security Advisory and Response
Learn about CVE-2021-33123, a vulnerability in the BIOS authenticated code module for Intel(R) Processors allowing privilege escalation. Find out the impact, affected versions, and mitigation steps.
A vulnerability in the BIOS authenticated code module for certain Intel(R) Processors could allow a privileged user to potentially escalate privileges through local access.
Understanding CVE-2021-33123
This CVE describes an improper access control issue in Intel(R) Processors that could lead to privilege escalation.
What is CVE-2021-33123?
The vulnerability involves a lack of proper access control in the BIOS authenticated code module for specific Intel(R) Processors, enabling a privileged user to elevate their privileges locally.
The Impact of CVE-2021-33123
The impact of this CVE is the potential escalation of privileges for a privileged user, which could lead to unauthorized access to sensitive information and system control.
Technical Details of CVE-2021-33123
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability arises from improper access control mechanisms in the BIOS authenticated code module for certain Intel(R) Processors, allowing a privileged user to exploit it for privilege escalation.
Affected Systems and Versions
The vulnerability affects certain versions of Intel(R) Processors. Users are advised to check the references for specific version details.
Exploitation Mechanism
The exploitation of this vulnerability requires local access to the affected system by a privileged user.
Mitigation and Prevention
Understanding how to mitigate and prevent exploitation of this vulnerability is crucial for maintaining system security.
Immediate Steps to Take
Immediately apply patches provided by the vendor to address the vulnerability. Restrict access and monitor system activity for any signs of unauthorized privilege escalation.
Long-Term Security Practices
Regularly update system firmware and software to ensure the latest security patches are in place. Implement access controls and permissions to limit privileged user actions.
Patching and Updates
Stay informed about security advisories from the vendor. Promptly apply any patches or updates released to fix vulnerabilities and enhance system security.