CVE-2023-28465 : What You Need to Know

This CVE record refers to a vulnerability in the package-decompression feature of HL7 (Health Level 7) FHIR Core Libraries before version 5.6.106. The vulnerability allows attackers to copy arbitrary files to specific directories through a directory traversal attack, as long as an allowed directory name is a substring of the directory name selected by the attacker. It's worth noting that this issue stems from an incomplete fix for CVE-2023-24057.

Understanding CVE-2023-28465

This section delves into a detailed understanding of CVE-2023-28465 and its implications.

What is CVE-2023-28465?

CVE-2023-28465 is a security vulnerability in HL7 FHIR Core Libraries that enables attackers to manipulate directory traversal to copy unauthorized files into specific directories.

The Impact of CVE-2023-28465

The vulnerability poses a significant risk as it allows malicious actors to compromise the integrity of affected systems by unauthorized copying of files, potentially leading to further exploitation and data breaches.

Technical Details of CVE-2023-28465

Here, we break down the technical aspects of CVE-2023-28465 to provide a deeper insight into the vulnerability.

Vulnerability Description

The flaw in the package-decompression feature of HL7 FHIR Core Libraries permits attackers to perform directory traversal attacks by copying files into designated directories.

Affected Systems and Versions

The vulnerability affects HL7 FHIR Core Libraries versions prior to 5.6.106. Systems running these versions are at risk of exploitation through this security flaw.

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging directory traversal techniques to copy unauthorized files to specific directories, compromising the targeted system's security.

Mitigation and Prevention

In light of CVE-2023-28465, implementing comprehensive security measures and best practices is crucial to mitigate the risk posed by this vulnerability.

Immediate Steps to Take

Organizations should promptly update HL7 FHIR Core Libraries to version 5.6.106 or later to remediate the vulnerability.
Conduct thorough security assessments and audits to detect any unauthorized file copies or directory traversal activities.

Long-Term Security Practices

Regularly monitor and patch vulnerabilities in software libraries and components to prevent potential exploitation.
Implement robust access controls and input validation mechanisms to thwart directory traversal attacks and unauthorized file operations.

Patching and Updates

Stay informed about security advisories and updates released by HL7 and other relevant sources to apply patches promptly.
Establish a proactive patch management process to ensure timely deployment of security fixes across all systems and software components.