CVE-2023-37907 : Vulnerability Insights and Analysis

Cryptomator's MSI installer allows local privilege escalation.

Understanding CVE-2023-37907

Cryptomator, a data encryption software, had a vulnerability in its MSI installer that could lead to local privilege escalation for low privileged users.

What is CVE-2023-37907?

Cryptomator's MSI installer version prior to 1.9.2 had a security flaw that allowed low privileged users to escalate their local privileges through the repair function, enabling unauthorized access to administrative CMDs.

The Impact of CVE-2023-37907

The impact of this vulnerability could result in unauthorized users gaining administrative privileges on the system, potentially leading to data breaches and unauthorized access to sensitive information.

Technical Details of CVE-2023-37907

The vulnerability was classified with a CVSS base score of 7.0, indicating a high severity level. The attack complexity is high, requiring low privileges and having a local attack vector.

Vulnerability Description

The issue arises as the repair function of the MSI installer spawns two administrative CMDs, allowing a simple local privilege escalation through a breakout. Version 1.9.2 of Cryptomator resolves this security flaw.

Affected Systems and Versions

Cryptomator version 1.9.2 is confirmed to be affected by this vulnerability.

Exploitation Mechanism

Unauthorized users with low privileges could exploit this vulnerability by leveraging the repair function of the MSI installer to escalate their access privileges.

Mitigation and Prevention

To address CVE-2023-37907, users are advised to take immediate steps and adopt long-term security practices to enhance their system's security.

Immediate Steps to Take

Update Cryptomator to version 1.9.2 or later to mitigate the vulnerability.
Avoid running the MSI installer as a low privileged user to prevent local privilege escalation.

Long-Term Security Practices

Regularly update software and applications to the latest versions to patch known security vulnerabilities.
Implement the principle of least privilege to limit user access rights.

Patching and Updates

Ensure that all systems are regularly patched and updated with the latest security fixes to prevent exploitation of known vulnerabilities.