CVE-2023-0400 : What You Need to Know

This CVE, assigned by Trellix, was published on February 1, 2023, with the vulnerability affecting Trellix's Data Loss Prevention (DLP) product on Windows.

Understanding CVE-2023-0400

This CVE involves a protection bypass vulnerability in DLP for Windows 11.9.x, which was addressed in version 11.10.0. The vulnerability allowed a local user to bypass DLP controls when uploading sensitive data from a mapped drive into a web email client.

What is CVE-2023-0400?

The protection bypass vulnerability in DLP for Windows 11.9.x was exploited by a local user to circumvent DLP controls during the upload of sensitive data from a mapped drive into a web email client. However, attempts to upload sensitive data from a local driver were appropriately prevented. Versions prior to 11.9 effectively detected and blocked such attempted uploads of sensitive data.

The Impact of CVE-2023-0400

The impact of this vulnerability is rated as medium with a CVSSv3.1 base score of 5.9. The vulnerability has a low attack complexity, requires local access, and has a high impact on integrity. The exploit scenario is considered as "GENERAL" with a CWE-670 classification related to "Always-Incorrect Control Flow Implementation". The vulnerability is also linked to CAPEC-126, known as Path Traversal.

Technical Details of CVE-2023-0400

The vulnerability allowed a local user to bypass DLP controls during the upload of sensitive data from a mapped drive into a web email client.

Vulnerability Description

The protection bypass vulnerability specifically affected DLP for Windows 11.9.x and was resolved in version 11.10.0.

Affected Systems and Versions

The vulnerability impacted the Windows platform running Data Loss Prevention (DLP) version 11.9.x up to version 11.9.100.

Exploitation Mechanism

Exploiting this vulnerability involved a local user uploading sensitive data from a mapped drive into a web email client, bypassing DLP controls.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-0400, immediate steps should be taken along with implementing long-term security practices.

Immediate Steps to Take

Customers are advised to upgrade to version 11.10.0 to address the protection bypass vulnerability in DLP effectively.

Long-Term Security Practices

It is recommended to regularly update and patch systems, monitor for security alerts, and enforce strong security measures to prevent similar vulnerabilities in the future.