CVE-2022-35949
`undici.request` vulnerable to SSRF using absolute URL on `pathname`
描述
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.
如何修補 CVE-2022-35949
要修補 CVE-2022-35949,請將受影響套件升級到下列已修補版本。
- —升級至 5.8.2+dfsg1+~cs18.9.18.1-1 或更新版本
- —升級至 5.8.2 或更新版本
CVE-2022-35949 正在被利用嗎?
低 — EPSS 為 1.4%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 5.8.2+dfsg1+~cs18.9.18.1-1
- from 0, < 5.8.2
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |