CVE-2021-21322 – fastify-http-proxy

Package

Manager: npm
Name: fastify-http-proxy
Vulnerable Version: >=0 <4.3.1

Severity

Level: Low

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

EPSS: 0.00446 pctl0.62574

Details

Prefix escape ### Impact By crafting a specific URL, it is possible to escape the prefix of the proxied backend service. If the base url of the proxied server is `/pub/`, a user expect that accessing `/priv` on the target service would not be possible. Unfortunately, it is. [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N) ### Patches All releases after v4.3.1 include the fix. ### Workarounds There are no workaround available. ### For more information If you have any questions or comments about this advisory: * Open an issue in [fastify-reply-from](https://github.com/fastify/fastify-reply-from) * Email us at [hello@matteocollina.com](mailto:hello@matteocollina.com)

Metadata

Created: 2021-03-03T02:18:08Z
Modified: 2021-03-02T03:32:25Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/03/GHSA-c4qr-gmr9-v23w/GHSA-c4qr-gmr9-v23w.json
CWE IDs: ["CWE-20"]
Alternative ID: GHSA-c4qr-gmr9-v23w
Finding: F184
Auto approve: 1