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CVE-2024-56526: User Information Exposure via Smarty Syntax Error in OXID eShop

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Overview

The cybersecurity world has once again been shaken with the discovery of a new vulnerability, CVE-2024-56526. This flaw resides in the OXID eShop, an ecommerce solution, specifically in versions prior to 7. The vulnerability arises from an issue with CMS pages in combination with Smarty, a PHP-based templating engine, leading to the potential exposure of sensitive user information. This vulnerability is a serious concern for any online retailer using OXID eShop, as it could lead to system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2024-56526
Severity: High (7.5/10)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Exposure of sensitive information and potential system compromise

Affected Products

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Product | Affected Versions

OXID eShop | Before 7

How the Exploit Works

The vulnerability is a result of a combination of CMS pages and the Smarty templating engine. If a CMS page contains a Smarty syntax error, user information may be displayed inadvertently. This flaw can be exploited remotely by malicious actors, who could use it to extract sensitive user data or potentially gain unauthorized access to the system.

Conceptual Example Code

Here is a conceptual example of how an attacker might exploit this vulnerability, by crafting a malicious payload designed to trigger a Smarty syntax error:

GET /cms/page-with-smarty-error HTTP/1.1
Host: vulnerable-eshop.example.com

Once the request is processed, the server could respond with a page containing exposed user information due to the Smarty syntax error.

Mitigation

The simplest and most effective mitigation for this issue is to apply the vendor-provided patch. For those unable to immediately apply the patch, a possible temporary measure could be the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block attempts to exploit the vulnerability.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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