CVE-2020-21266

Vulnerability

Broadleaf Commerce version 5.1.14-GA is affected by cross-site scripting (XSS) due to a slow HTTP POST vulnerability. The issue is triggered when an attacker sends a slow HTTP POST request to the application, potentially allowing the injection of malicious scripts. The fix is included in version 5.1.15-GA, which upgraded jQuery to address the XSS issue [1].

Exploitation

An attacker can exploit this vulnerability by sending a crafted, slow HTTP POST request to a Broadleaf Commerce instance running version 5.1.14-GA. No authentication is required, but the attacker must be able to send network requests to the vulnerable application. The slow request may cause the server to reflect the injected script in subsequent responses, leading to XSS [1].

Impact

Successful exploitation allows the attacker to execute arbitrary JavaScript in the context of the victim's browser. This can lead to session hijacking, defacement, or theft of sensitive information. The impact is limited to cross-site scripting (XSS) in the application's response [1].

Mitigation

Broadleaf Commerce released version 5.1.15-GA on October 14th, 2018, which upgrades jQuery to address the XSS issue. Users should upgrade to at least version 5.1.15-GA to mitigate this vulnerability [1]. No workarounds are documented in the available references.