Improper Certificate Validation Affecting undici package, versions >=4.8.2 <5.5.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-UNDICI-2928996
- published17 Jun 2022
- disclosed17 Jun 2022
- creditpimterry
Introduced: 17 Jun 2022
CVE-2022-32210 (opens in a new tab)How to fix?
Upgrade undici to version 5.5.1 or higher.
Overview
undici is an An HTTP/1.1 client, written from scratch for Node.js
Affected versions of this package are vulnerable to Improper Certificate Validation due to Undici.ProxyAgent missing verification of the remote server's certificate, which leads to exposure of all the requests and responses data to the proxy.
PoC:
setGlobalDispatcher(new ProxyAgent('http://localhost:8000/')) // HTTP Proxy
// or
undici.request('https://example.com/', { dispatcher: new ProxyAgent('http://localhost:8000') }) // HTTP Proxy
// or
fetch('https://example.com/', { dispatcher: new ProxyAgent('http://localhost:8000') }) // HTTP Proxy
Workarounds:
If upgrading is not possible - avoid using ProxyAgent as a dispatcher for TLS Connections.