CVE-2024-29180
Vulnérabilité élevée dans webpack-dev-middleware (webpack)
Description
Prior to versions 7.1.0, 6.1.2, and 5.3.4, the webpack-dev-middleware development middleware for devpack does not validate the supplied URL address sufficiently before returning the local file. It is possible to access any file on the developer's machine. The middleware can either work with the physical filesystem when reading the files or it can use a virtualized in-memory `memfs` filesystem. If `writeToDisk` configuration option is set to `true`, the physical filesystem is used. The `getFilenameFromUrl` method is used to parse URL and build the local file path. The public path prefix is stripped from the URL, and the `unsecaped` path suffix is appended to the `outputPath`. As the URL is not unescaped and normalized automatically before calling the midlleware, it is possible to use `%2e` and `%2f` sequences to perform path traversal attack. Developers using `webpack-dev-server` or `webpack-dev-middleware` are affected by the issue. When the project is started, an attacker might access any file on the developer's machine and exfiltrate the content. If the development server is listening on a public IP address (or `0.0.0.0`), an attacker on the local network can access the local files without any interaction from the victim (direct connection to the port). If the server allows access from third-party domains, an attacker can send a malicious link to the victim. When visited, the client side script can connect to the local server and exfiltrate the local files. Starting with fixed versions 7.1.0, 6.1.2, and 5.3.4, the URL is unescaped and normalized before any further processing.
Gravité et risque d'exploitation
CVE-2024-29180 obtient un score CVSS de 7.4/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 1.23 %, ce qui la place devant 68.4 % des CVE référencées.
Que faire ?
- Vérifiez si webpack-dev-middleware (versions >= 6.0.0, < 6.1.2, >= 7.0.0, < 7.1.0, < 5.3.4) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.
Références
- https://github.com/webpack/webpack-dev-middleware/security/advisories/GHSA-wr3j-pwj9-hqq6
- https://github.com/webpack/webpack-dev-middleware/commit/189c4ac7d2344ec132a4689e74dc837ec5be0132
- https://github.com/webpack/webpack-dev-middleware/commit/9670b3495da518fe667ff3428c5e4cb9f2f3d353
- https://github.com/webpack/webpack-dev-middleware/commit/e10008c762e4d5821ed6990348dabf0d4d93a10e
- https://github.com/webpack/webpack-dev-middleware/blob/7ed24e0b9f53ad1562343f9f517f0f0ad2a70377/src/utils/getFilenameFromUrl.js#L82
- https://github.com/webpack/webpack-dev-middleware/blob/7ed24e0b9f53ad1562343f9f517f0f0ad2a70377/src/utils/setupOutputFileSystem.js#L21
- https://github.com/webpack/webpack-dev-middleware/releases/tag/v5.3.4
- https://github.com/webpack/webpack-dev-middleware/releases/tag/v6.1.2
- https://github.com/webpack/webpack-dev-middleware/releases/tag/v7.1.0