CVE-2023-45867 : Vulnerability Insights and Analysis

This article provides an overview of CVE-2023-45867, a directory traversal and local file inclusion vulnerability found in the ILIAS ScormAicc module.

Understanding CVE-2023-45867

In September 2013, the ILIAS release of the ScormAicc module was identified to contain a medium-criticality security flaw that could potentially compromise confidential files on the web server.

What is CVE-2023-45867?

The CVE-2023-45867 vulnerability allows an attacker, holding a privileged account like the tutor role, to gain unauthorized access to sensitive files stored on the web server by exploiting a directory traversal and local file inclusion flaw in the ScormAicc module.

The Impact of CVE-2023-45867

This vulnerability poses a significant risk to confidentiality as it can lead to the unauthorized retrieval of sensitive documents and configuration files, potentially compromising the system's security. Furthermore, the issue is remotely exploitable over the internet, increasing its severity.

Technical Details of CVE-2023-45867

The following section delves into the specifics of the vulnerability, including its description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises due to inadequate input validation in the file parameter of a URL, allowing an attacker to insert directory traversal sequences and access unauthorized files.

Affected Systems and Versions

The vulnerability affects ILIAS in the 2013-09-12 release, specifically impacting the ScormAicc module. All versions of this specific release are susceptible to exploitation.

Exploitation Mechanism

The vulnerability is exploited by manipulating the file parameter in a URL, enabling the attacker to traverse directories and access sensitive files readable by the web server user www-data.

Mitigation and Prevention

To safeguard systems from CVE-2023-45867, immediate actions and long-term security practices are essential.

Immediate Steps to Take

It is recommended to apply security patches provided by ILIAS promptly. Additionally, users should restrict access privileges and regularly monitor file access and URL inputs to detect any suspicious activity.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and educating users on safe URL handling are crucial for preventing similar vulnerabilities in the future.

Patching and Updates

Stay informed about security updates and patches released by ILIAS to address CVE-2023-45867, ensuring systems are up to date with the latest security enhancements.