CVE-2019-12245 : What You Need to Know

SilverStripe up to version 4.3.3 is vulnerable to improper access control for protected files uploaded using Upload::loadIntoFile(), potentially allowing attackers to guess file names in the silverstripe/assets folder.

Understanding CVE-2019-12245

This CVE identifies a security vulnerability in SilverStripe versions up to 4.3.3 that could lead to unauthorized access to protected files.

What is CVE-2019-12245?

The vulnerability in SilverStripe allows attackers to guess file names in the silverstripe/assets folder, exploiting improper access control for uploaded files.

The Impact of CVE-2019-12245

The vulnerability could result in unauthorized access to sensitive files, compromising the confidentiality and integrity of the affected system.

Technical Details of CVE-2019-12245

SilverStripe through version 4.3.3 has incorrect access control for protected files uploaded via Upload::loadIntoFile().

Vulnerability Description

The issue stems from the AssetControlExtension, enabling attackers to potentially guess file names in the silverstripe/assets folder.

Affected Systems and Versions

Product: SilverStripe
Vendor: Not applicable
Versions: Up to 4.3.3

Exploitation Mechanism

Attackers can exploit the vulnerability by guessing file names in the silverstripe/assets folder, bypassing access controls.

Mitigation and Prevention

To address CVE-2019-12245, follow these steps:

Immediate Steps to Take

Upgrade SilverStripe to a patched version.
Restrict access to the silverstripe/assets folder.
Monitor file access and permissions.

Long-Term Security Practices

Regularly update and patch software.
Implement strong access controls and authentication mechanisms.
Conduct security audits and penetration testing.

Patching and Updates

Ensure timely installation of security patches and updates for SilverStripe to mitigate the vulnerability.