CVE-2022-36764 : Exploit Details and Defense Strategies

A detailed insight into the Heap Buffer Overflow vulnerability in Tcg2MeasurePeImage function within EDK2, impacting confidentiality, integrity, and availability.

Understanding CVE-2022-36764

This section provides information on the vulnerability's description, impact, affected systems, exploitation mechanism, and mitigation steps.

What is CVE-2022-36764?

EDK2 is susceptible to a vulnerability in the Tcg2MeasurePeImage() function, enabling a heap buffer overflow via a local network. Exploiting this flaw could lead to compromised confidentiality, integrity, and availability.

The Impact of CVE-2022-36764

The vulnerability has a CVSS v3.1 base score of 7 (High severity) with an attack complexity of HIGH. It affects the availability, integrity, and confidentiality of the system but requires low privileges and user interaction.

Technical Details of CVE-2022-36764

Get insights into the specifics of the vulnerability affecting EDK2, including its description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability lies in the Tcg2MeasurePeImage() function of EDK2, allowing a user to trigger a heap buffer overflow within the system.

Affected Systems and Versions

The affected product is 'edk2' by 'TianoCore,' with stable versions equal to or less than 202311 being impacted. This vulnerability is rated as 'affected.'

Exploitation Mechanism

The flaw can be exploited via a local network, and successful exploitation could lead to severe consequences for confidentiality, integrity, and availability.

Mitigation and Prevention

Learn about the immediate steps to take and long-term security practices to mitigate the risks posed by this heap buffer overflow vulnerability.

Immediate Steps to Take

It is crucial to apply security patches as soon as they are released by the vendor to address this vulnerability effectively.

Long-Term Security Practices

Adopting robust security measures, such as network segmentation and regular security assessments, can help prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security updates from TianoCore and apply patches promptly to ensure the EDK2 environment remains secure and protected.