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The CVE-2023-XXXX vulnerability in Shopware’s PDF generator for order invoices is a Server-Side Request Forgery (SSRF) flaw. It occurs because the application does not properly sanitize user input within the invoice comment field. An authenticated administrative user can inject an HTML `IMG` tag with a malicious `src` attribute. When the PDF generation engine processes this tag to embed an image, it initiates an outbound HTTP GET request to the specified URL. This mechanism allows an attacker to force the server to send requests to arbitrary internal or external systems, potentially revealing information about internal network services, though its impact is limited as it only triggers via specific HTML tags during PDF creation.
Platform: Shopware
Version: Pre-6.5.7.4
Vulnerability: Server-Side Request Forgery
Severity: Medium
date: 2023-10-10
Prediction: 2023-11-15
What Undercode Say:
curl -X GET http://internal-database.local/`nmap -p 80,443,22 192.168.1.0/24`
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How Exploit:
Inject malicious IMG tag into the administrative invoice comment field during document creation. The server processes this tag and makes a request to a specified internal or external URL when generating the PDF preview.
Protection from this CVE:
Input sanitization for HTML.
Restrict server outbound requests.
Apply vendor patch.
Impact:
Limited internal resource access.
Information disclosure potential.
Privileged admin account required.
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Sources:
Reported By: github.com
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