CVE-2021-21322 Information

Description

fastify-http-proxy is an npm package which is a fastify plugin for proxying your http requests to another server with hooks. 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. In affected versions it is possible. This is fixed in version 4.3.1.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://github.com/fastify/fastify-http-proxy/security/advisories/GHSA-c4qr-gmr9-v23w https://www.npmjs.com/package/fastify-http-proxy https://github.com/fastify/fastify-http-proxy/commit/02d9b43c770aa16bc44470edecfaeb7c17985016 fastify-http-proxy is an npm package which is a fastify plugin for proxying your http requests to another server with hooks. 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. In affected versions it is possible. This is fixed in version 4.3.1.

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8