CVE-2022-35949

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.

CVSS v3.0 9.8 CRITICAL

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/nodejs/undici/security/advisories/GHSA-8qr4-xgw6-wmr3	Exploit Mitigation Third Party Advisory
https://github.com/nodejs/undici/releases/tag/v5.8.2	Release Notes Third Party Advisory
https://github.com/nodejs/undici/commit/124f7ebf705366b2e1844dff721928d270f87895	Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*

Information

Published : 2022-08-12 16:15

Updated : 2023-01-18 14:15

NVD link : CVE-2022-35949

Mitre link : CVE-2022-35949

JSON object : View

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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Products Affected

nodejs

undici

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