CVE-2020-24455 : What You Need to Know

A vulnerability in TPM2 source code could lead to privilege escalation, affecting versions before 3.0.1 and 2.4.3.

Understanding CVE-2020-24455

This CVE involves a flaw in the TPM2 source code that could be exploited by a privileged user to escalate their privileges through local access.

What is CVE-2020-24455?

The vulnerability arises from the lack of proper initialization of a variable in the TPM2 source code, potentially enabling a privileged user to escalate their privileges locally. The affected versions include tpm2-tss before 3.0.1 and before 2.4.3.

The Impact of CVE-2020-24455

The vulnerability could allow a privileged user to exploit the flaw and elevate their privileges, posing a significant security risk to the affected systems.

Technical Details of CVE-2020-24455

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability stems from missing initialization of a variable in the TPM2 source code, creating an opportunity for privilege escalation.

Affected Systems and Versions

Product: TPM2 source
Vendor: Not applicable
Versions affected: before 3.0.1, before 2.4.3

Exploitation Mechanism

The flaw can be exploited by a privileged user with local access to potentially escalate their privileges on the system.

Mitigation and Prevention

Protecting systems from CVE-2020-24455 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update to the patched versions 3.0.1 or 2.4.3 to mitigate the vulnerability.
Monitor and restrict privileged user access to critical system components.
Implement strong access controls and authentication mechanisms.

Long-Term Security Practices

Regularly update and patch software to address security vulnerabilities promptly.
Conduct security assessments and audits to identify and remediate potential weaknesses.
Educate users on best security practices to prevent exploitation of vulnerabilities.

Patching and Updates

Ensure timely application of security patches and updates to mitigate the risk of privilege escalation.