Vulnerability · Published Jan 22, 2024 · Assigned by GitHub_M
CVE-2024-23340@hono/node-server can't handle "double dots" in URL
Medium 5.3
In plain English
A medium-severity path traversal in node-server from honojs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
@hono/node-server is an adapter that allows users to run Hono applications on Node.js. Since v1.3.0, @hono/node-server has used its own Request object with `url` behavior that is unexpected. In the standard API, if the URL contains `..`, here called "double dots", the URL string returned by Request will be in the resolved path. However, the `url` in @hono/node-server's Request as does not resolve double dots, so `http://localhost/static/.. /foo.txt` is returned. This causes vulnerabilities when using `serveStatic`. Modern web browsers and a latest `curl` command resolve double dots on the client side, so this issue doesn't affect those using either of those tools. However, problems may occur if accessed by a client that does not resolve them. Version 1.4.1 includes the change to fix this issue. As a workaround, don't use `serveStatic`.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @hono/node-server | 1.4.1 | GHSA-rjq5-w47x-x359 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| honojs | node-server | >= 1.3.0, < 1.4.1 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://github.com/honojs/node-server/security/advisories/GHSA-rjq5-w47x-x359 x_refsource_CONFIRM
- https://github.com/honojs/node-server/commit/dd9b9a9b23e3896403c90a740e7f1f0892feb402 x_refsource_MISC
- https://github.com/honojs/node-server/blob/8cea466fd05e6d2e99c28011fc0e2c2d3f3397c9/src/request.ts#L43-L45 x_refsource_MISC