Executive Summary

The Salesforce module for Backdrop CMS before version 1.x-1.0.1 has a critical vulnerability related to Cross-Site Request Forgery (CSRF). Specifically, it does not properly generate or validate a cryptographically random state parameter, which is necessary to protect the authorization flow from CSRF attacks.

Because the OAuth callback endpoint is accessible to most authenticated users and potentially anonymous users depending on site configuration, this flaw increases the risk that unauthorized actions could be performed by attackers exploiting the CSRF vulnerability.

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Impact Analysis

This vulnerability can allow attackers to perform unauthorized actions on behalf of legitimate users by exploiting the CSRF flaw in the authorization flow.

Since the OAuth callback endpoint is widely accessible, attackers might trick users into executing unwanted operations, potentially leading to compromised user accounts, unauthorized data access, or manipulation within the Salesforce integration on Backdrop CMS.

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Detection Guidance

This vulnerability relates to the Salesforce module for Backdrop CMS prior to version 1.x-1.0.1, which does not properly use a random state parameter to protect against CSRF attacks in the authorization flow.

Detection involves verifying the version of the Salesforce module installed on your Backdrop CMS instance.

• Check the installed version of the Salesforce module in your Backdrop CMS admin interface or by inspecting the module files.
• Look for the OAuth callback endpoint accessibility and whether it is exposed to authenticated or anonymous users.

There are no specific network or system commands provided in the available resources to detect this vulnerability.

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Mitigation Strategies

The primary mitigation step is to upgrade the Salesforce module for Backdrop CMS to version 1.x-1.0.1 or later, where the vulnerability has been fixed.

Since the vulnerability involves improper CSRF protection in the authorization flow, ensuring that the OAuth callback endpoint is not unnecessarily exposed to anonymous or unauthorized users can reduce risk.

Review and tighten access controls on the OAuth callback endpoint as a temporary measure until the module is updated.

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Compliance Impact

The vulnerability in the Salesforce module for Backdrop CMS allows for Cross-Site Request Forgery (CSRF) attacks due to the lack of a proper random state parameter in the authorization flow. This security flaw can lead to unauthorized actions and potential data breaches.

Such unauthorized access and potential data compromise can negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive data against unauthorized access and attacks.

Therefore, failure to mitigate this vulnerability may result in non-compliance with these regulations, exposing organizations to legal and financial risks.

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