CVE-2020-7994: Dolibarr cross-site scripting (XSS) vulnerability

Background

Dolibarr is an open-source ERP and CRM software designed for small and medium-sized businesses. It provides a range of features including accounting, inventory management, customer relationship management, and more. Dolibarr is widely used by organizations to streamline their business processes and improve efficiency. However, a cross-site scripting (XSS) vulnerability has been discovered in Dolibarr version 10.0.6, which could potentially allow remote attackers to inject malicious web script or HTML into the application.

Vulnerability Detail

The vulnerability exists in multiple pages of Dolibarr, including dict.php, const.php, company.php, defaultvalues.php, translation.php, and ihm.php. Attackers can exploit this vulnerability by injecting arbitrary web script or HTML through various parameters. This could lead to the execution of malicious code in the context of the affected user's browser, potentially compromising sensitive information or performing unauthorized actions. The severity of this vulnerability is rated as MODERATE with a CVSS score of 6.1.

Workaround

If upgrading to a patched version is not immediately possible, users can implement a temporary workaround by applying input validation and sanitization measures to the affected parameters. This can help mitigate the risk of XSS attacks. Here is an example of how to sanitize user input in PHP:

$label = htmlspecialchars($_GET['label']);
$name = htmlspecialchars($_GET['name']);
$note = htmlspecialchars($_GET['note']);
$zip = htmlspecialchars($_GET['zip']);
$email = htmlspecialchars($_GET['email']);
$url = htmlspecialchars($_GET['url']);
$key = htmlspecialchars($_GET['key']);
$value = htmlspecialchars($_GET['value']);
$motd = htmlspecialchars($_GET['motd']);
$home = htmlspecialchars($_GET['home']);

By using the htmlspecialchars function, special characters are converted to their HTML entities, preventing them from being interpreted as code.

Conclusion

The cross-site scripting (XSS) vulnerability in Dolibarr version 10.0.6 poses a moderate security risk. It is crucial for users to update their Dolibarr installation to version 10.0.7 or later to mitigate this vulnerability. Regularly checking for updates and applying them promptly is essential for maintaining the security of the application. For further assistance or support in vulnerability remediation, please contact DevNack.com.

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