undici is an HTTP/1.1 client, written from scratch for Node.js.`undici` is vulnerable to SSRF (Server-side Request Forgery) when an application takes in **user input** into the `path/pathname` option of `undici.request`. If a user specifies a URL such as `http://127.0.0.1` or `//127.0.0.1` ```js const undici = require("undici") undici.request({origin: "http://example.com", pathname: "//127.0.0.1"}) ``` Instead of processing the request as `http://example.org//127.0.0.1` (or `http://example.org/http://127.0.0.1` when `http://127.0.0.1 is used`), it actually processes the request as `http://127.0.0.1/` and sends it to `http://127.0.0.1`. If a developer passes in user input into `path` parameter of `undici.request`, it can result in an _SSRF_ as they will assume that the hostname cannot change, when in actual fact it can change because the specified path parameter is combined with the base URL. This issue was fixed in `undici@5.8.1`. The best workaround is to validate user input before passing it to the `undici.request` call.
References
Link | Resource |
---|---|
https://github.com/nodejs/undici/commit/124f7ebf705366b2e1844dff721928d270f87895 | Patch Third Party Advisory |
https://github.com/nodejs/undici/releases/tag/v5.8.2 | Release Notes Third Party Advisory |
https://github.com/nodejs/undici/security/advisories/GHSA-8qr4-xgw6-wmr3 | Exploit Mitigation Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2022-08-12T00:00:00
Updated: 2023-01-18T00:00:00
Reserved: 2022-07-15T00:00:00
Link: CVE-2022-35949
JSON object: View
NVD Information
Status : Analyzed
Published: 2022-08-12T23:15:07.970
Modified: 2023-03-28T17:10:18.800
Link: CVE-2022-35949
JSON object: View
Redhat Information
No data.
CWE