Easily map the attack path and prioritize which CVEs are a threat to your organization
Miggo AIGenerate vendor-ready rules for the observed attack patterns, plus reasoning and safe deployment guidance
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| webpack-dev-server | npm | <= 5.2.5 | 5.2.6 |
Miggo AIRoot Cause AnalysisThe vulnerability exists in the webpack-dev-server because two of its internal API endpoints, /webpack-dev-server/invalidate and /webpack-dev-server/open-editor, did not perform any cross-origin checks. This allowed any website to send requests to these endpoints and trigger actions on the developer's machine, constituting a Cross-Site Request Forgery (CSRF) vulnerability.
The analysis of the patch commit 80cd9eea54975fe632a518d8bd902a260f374e7c clearly shows the fix. The changes are primarily in lib/Server.js. A new private method, #isSameOriginRequest, was introduced to the Server class to validate if a request is from a same-origin context by checking the Sec-Fetch-Site and Origin headers.
The core of the fix involves adding calls to this new validation method at the beginning of the route handlers for the two vulnerable endpoints. These handlers are anonymous functions defined within the Server.setupRoutes method. Since these vulnerable handlers are created and configured within setupRoutes, this function is identified as the location of the vulnerability. During runtime, when an exploit is attempted, the execution would pass through the handlers defined in this function. Therefore, Server.setupRoutes is the key function that would appear in a profiler trace related to this vulnerability.
Server.setupRouteslib/Server.js