Vulnerability · Published Mar 21, 2024 · Assigned by GitHub_M
CVE-2024-29180webpack-dev-middleware Path Traversal vulnerability
High 7.4
In plain English
A high-severity path traversal in webpack-dev-middleware from webpack. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | webpack-dev-middleware | 7.1.0 | GHSA-wr3j-pwj9-hqq6 |
| npm | webpack-dev-middleware | 6.1.2 | GHSA-wr3j-pwj9-hqq6 |
| npm | webpack-dev-middleware | 5.3.4 | GHSA-wr3j-pwj9-hqq6 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| webpack | webpack-dev-middleware | >= 7.0.0, < 7.1.0>= 6.0.0, < 6.1.2< 5.3.4 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
References
- https://github.com/webpack/webpack-dev-middleware/security/advisories/GHSA-wr3j-pwj9-hqq6 x_refsource_CONFIRM
- https://github.com/webpack/webpack-dev-middleware/commit/189c4ac7d2344ec132a4689e74dc837ec5be0132 x_refsource_MISC
- https://github.com/webpack/webpack-dev-middleware/commit/9670b3495da518fe667ff3428c5e4cb9f2f3d353 x_refsource_MISC
- https://github.com/webpack/webpack-dev-middleware/commit/e10008c762e4d5821ed6990348dabf0d4d93a10e x_refsource_MISC
- https://github.com/webpack/webpack-dev-middleware/blob/7ed24e0b9f53ad1562343f9f517f0f0ad2a70377/src/utils/getFilenameFromUrl.js#L82 x_refsource_MISC
- https://github.com/webpack/webpack-dev-middleware/blob/7ed24e0b9f53ad1562343f9f517f0f0ad2a70377/src/utils/setupOutputFileSystem.js#L21 x_refsource_MISC
- https://github.com/webpack/webpack-dev-middleware/releases/tag/v5.3.4 x_refsource_MISC
- https://github.com/webpack/webpack-dev-middleware/releases/tag/v6.1.2 x_refsource_MISC
- https://github.com/webpack/webpack-dev-middleware/releases/tag/v7.1.0 x_refsource_MISC