CVE-2020-15109 : Exploit Details and Defense Strategies

In solidus before versions 2.8.6, 2.9.6, and 2.10.2, a vulnerability exists that allows changing order addresses without triggering validations. This could be exploited by a malicious customer to alter the address without affecting shipment costs. The issue affects stores with multiple shipping zones and varying shipment costs per zone due to how checkout attributes are managed.

Understanding CVE-2020-15109

This CVE pertains to a security vulnerability in the Solidus e-commerce platform.

What is CVE-2020-15109?

The vulnerability in Solidus versions prior to 2.8.6, 2.9.6, and 2.10.2 enables unauthorized address changes during order processing, potentially leading to fraudulent activities.

The Impact of CVE-2020-15109

CVSS Base Score: 5.3 (Medium)
Attack Vector: Network
Attack Complexity: Low
Integrity Impact: Low
Privileges Required: None
Scope: Unchanged
Confidentiality Impact: None
User Interaction: None
Availability Impact: None
CVE Identifier: CVE-2020-15109
CWE ID: CWE-20: Improper Input Validation

Technical Details of CVE-2020-15109

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The flaw allows a customer to manipulate request data to change order addresses without proper validation, affecting shipment costs.

Affected Systems and Versions

Product: Solidus
Vendor: solidusio
Versions Affected: < 2.8.6, >= 2.9.0, < 2.9.6, >= 2.10.0, < 2.10.2

Exploitation Mechanism

The vulnerability arises from the structure of checkout permitted attributes, allowing address changes without validation.

Mitigation and Prevention

Protect your systems from this vulnerability with the following steps:

Immediate Steps to Take

Upgrade to a patched version (2.8.6, 2.9.6, or 2.10.2) of Solidus
Apply the workaround provided in the references if upgrading is not feasible

Long-Term Security Practices

Regularly update and patch your e-commerce platform
Implement proper input validation and security checks

Patching and Updates

Stay informed about security advisories and apply patches promptly to mitigate risks.