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CVE-2024-43608 exploits a vulnerability in react-server-dom-webpack versions prior to 19.2.3, where improper handling of server-side rendering contexts allows unauthorized access to sensitive system-level information. This occurs due to insufficient isolation between user data and system internals during the server-component rendering process. Attackers can craft specific requests that bypass access controls and leak internal state, such as environment variables or file system paths. The vulnerability targets the serialization and deserialization mechanisms in React Server Components, enabling malicious actors to inject payloads that resolve to system objects. By manipulating the component tree or props, attackers trigger exposure of privileged data through error messages or direct leakage. This is particularly critical in multi-tenant environments where context boundaries are essential. The flaw stems from the lack of proper sanitization in the server-side rendering pipeline, allowing cross-context data access. When server components render, serialization processes fail to adequately restrict internal references, leading to information disclosure. Exploitation requires accessing endpoints that use affected react-server-dom-webpack bundles, often via HTTP requests to server-rendered applications. The vulnerability leverages the way React manages server and client data transfer, compromising system security by exposing internal configurations.
Platform: Vite.js Plugin RSC
Version: Prior to 19.2.3
Vulnerability: Information Disclosure
Severity: Critical
Date: 2024-10-03
Prediction: Patched in 0.5.7
What Undercode Say:
bash Check @vitejs/plugin-rsc version npm list @vitejs/plugin-rsc Upgrade to patched version npm install @vitejs/[email protected] Verify react-server-dom-webpack version npm list react-server-dom-webpack Update react-server-dom-webpack npm install [email protected]
How Exploit:
Crafted requests to server components exploit serialization flaws, leaking environment variables or internal paths.
Protection from this CVE:
Upgrade to @vitejs/[email protected] and [email protected].
Impact:
Unauthorized sensitive system information access, enabling further attacks.
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Sources:
Reported By: github.com
Extra Source Hub:
Undercode
