Improper Certificate Validation Affecting undici Open this link in a new tab package, versions >=4.8.2 <5.5.1
Exploit Maturity
Proof of concept
Attack Complexity
High
Privileges Required
High
Scope
Changed
Confidentiality
High
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snyk-id
SNYK-JS-UNDICI-2928996
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published
17 Jun 2022
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disclosed
17 Jun 2022
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credit
pimterry
Introduced: 17 Jun 2022
New CVE-2022-32210 Open this link in a new tabHow 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.