CVE-2018-17058 : Security Advisory and Response

A vulnerability was found in JABA XPress Online Shop up to 2018-09-14 that allows an attacker to bypass filename validation during picture uploads, potentially leading to arbitrary code execution.

Understanding CVE-2018-17058

This CVE describes a security flaw in JABA XPress Online Shop that enables unauthorized file uploads.

What is CVE-2018-17058?

The vulnerability in JABA XPress Online Shop up to 2018-09-14 allows an attacker with authentication to upload files containing arbitrary ASPX code by bypassing filename validation during the picture upload process.

The Impact of CVE-2018-17058

The vulnerability permits an authenticated attacker to execute arbitrary code by uploading malicious files, posing a significant security risk to the application and its users.

Technical Details of CVE-2018-17058

This section provides detailed technical insights into the CVE.

Vulnerability Description

The flaw in JABA XPress Online Shop allows attackers to upload files with arbitrary ASPX code by exploiting the lack of filename validation during the picture upload process.

Affected Systems and Versions

Product: JABA XPress Online Shop
Versions: Up to 2018-09-14

Exploitation Mechanism

Attackers with authentication can bypass filename validation during picture uploads in the ProductEdit.aspx feature.
By using empty parameters for "w" and "h", attackers can upload files via FileUploader.aspx.cs in FileUploader.aspx.
The uploaded file can contain arbitrary ASPX code that can be executed by accessing specific URLs.

Mitigation and Prevention

Protecting systems from CVE-2018-17058 requires immediate actions and long-term security practices.

Immediate Steps to Take

Implement file upload restrictions and proper input validation to prevent arbitrary code execution.
Monitor file uploads for suspicious activities and restrict access to sensitive directories.

Long-Term Security Practices

Regularly update and patch the application to address security vulnerabilities promptly.
Conduct security assessments and penetration testing to identify and remediate potential weaknesses.

Patching and Updates

Apply security patches provided by the vendor to mitigate the vulnerability and enhance the overall security posture of the application.