CVE-2023-3892 : Vulnerability Insights and Analysis

This CVE-2023-3892 impacts the MIM Assistant and MIM Client software developed by MIM Software due to an improper restriction of XML external entity reference vulnerability. The vulnerability specifically affects the DICOM RTst Loading modules, potentially allowing XML entity linking/XML external entities blowup.

Understanding CVE-2023-3892

This section delves into the details of the CVE-2023-3892 vulnerability affecting MIM Assistant and MIM Client software.

What is CVE-2023-3892?

The CVE-2023-3892 vulnerability involves unsafe XML parsing of 3rd party DICOM private tags, which may lead to XXE (XML External Entity) attacks. Attackers could exploit this vulnerability by crafting a malicious XML document, embedding it into specific 3rd party private RTst metadata tags, transferring the compromised DICOM object to MIM, and manipulating MIM to archive and load the data.

The Impact of CVE-2023-3892

The impact of this vulnerability is rated with a CVSS v3.1 base score of 5.6, categorizing it as a medium-severity issue. The attack complexity is considered high with adjacent network attack vectors and high availability impact. While confidentiality and integrity impacts are low, user interaction is required for exploitation.

Technical Details of CVE-2023-3892

This section provides more technical insights into the vulnerability, including the description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from an improper restriction of XML external entity reference, allowing for XML entity linking and potential XML external entities blowup within the DICOM RTst Loading modules of MIM Assistant and MIM Client.

Affected Systems and Versions

The impacted products include MIM Assistant and MIM Client versions 7.2.10 and 7.3.3, urging users to update to versions 7.2.11+ and 7.3.4+ to mitigate the vulnerability.

Exploitation Mechanism

To exploit this vulnerability, attackers need to craft a malicious XML document, embed it in specific 3rd party private RTst metadata tags, and manipulate the compromised DICOM object to trigger XXE attacks.

Mitigation and Prevention

Understanding the importance of mitigating and preventing CVE-2023-3892 is key to maintaining system security and integrity.

Immediate Steps to Take

Users of MIM Assistant and MIM Client versions 7.2.10 and 7.3.3 should promptly update to versions 7.2.11+ and 7.3.4+ to address the vulnerability and reduce the risk of exploitation.

Long-Term Security Practices

Implementing robust XML parsing best practices, regular security assessments, and user awareness training can enhance overall system security and resilience against similar vulnerabilities.

Patching and Updates

Staying proactive in applying security patches, updates, and following vendor recommendations is crucial to maintaining a secure software environment and safeguarding against potential cyber threats.