CVE-2022-37430

Root

Cause CVE-2022-37430 is a cross-site scripting (XSS) vulnerability in the Silverstripe Framework (silverstripe/framework) through version 4.11. The flaw arises from insufficient sanitization of the href attribute in HTML links, allowing an attacker to inject malicious JavaScript code that is executed when a user interacts with the crafted link [2][3].

Exploitation

An attacker can exploit this vulnerability by submitting content containing a specially crafted href value, for example through user-generated content or CMS fields that accept HTML. No authentication is required if the application allows unauthenticated users to submit content; however, in many cases the attacker would need a role that can create or edit content. The XSS payload is stored and executed in the context of the victim's browser when they view the page containing the malicious link [2][3].

Impact

Successful exploitation enables the attacker to execute arbitrary JavaScript in the victim's browser. This can lead to session hijacking, credential theft, defacement, or redirection to malicious sites. The vulnerability is classified as medium severity (CVSS 6.1) due to the need for user interaction and the requirement that the attacker have some level of content creation access in typical deployments [2].

Mitigation

The Silverstripe project has addressed this issue in subsequent releases. Users are advised to upgrade to a patched version of the framework (4.11.1 or later) to remediate the vulnerability. No workaround is provided; upgrading is the recommended action [2][3].