[NPM:GHSA-8QR4-XGW6-WMR3] `undici.request` vulnerable to SSRF using absolute URL on `pathname`
Impact
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.
Patches
This issue was fixed in undici@5.8.1
.
Workarounds
The best workaround is to validate user input before passing it to the undici.request
call.
For more information
If you have any questions or comments about this advisory:
- Open an issue in undici repository
- To make a report, follow the SECURITY document
Package | Affected Version |
---|---|
pkg:npm/undici | <= 5.8.1 |
Package | Fixed Version |
---|---|
pkg:npm/undici | = 5.8.2 |
- ID
- NPM:GHSA-8QR4-XGW6-WMR3
- Severity
- moderate
- URL
- https://github.com/advisories/GHSA-8qr4-xgw6-wmr3
- Published
-
2022-08-18T18:59:46
(2 years ago) - Modified
-
2023-02-03T05:04:20
(19 months ago) - Rights
- NPM Security Team
- Other Advisories
# CVE | Description | CVSS | EPSS | EPSS Trend (30 days) | Affected Products | Weaknesses | Security Advisories | Exploits | PoC | Pubblication Date | Modification Date |
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# CVE | Description | CVSS | EPSS | EPSS Trend (30 days) | Affected Products | Weaknesses | Security Advisories | PoC | Pubblication Date | Modification Date |