HTTP Request Smuggling Affecting mitmproxy package, versions [,7.0.3)
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Test your applications- Snyk ID SNYK-PYTHON-MITMPROXY-1585665
- published 16 Sep 2021
- disclosed 16 Sep 2021
- credit João Sobral (@chinchila)
Introduced: 16 Sep 2021
CVE-2021-39214 Open this link in a new tabHow to fix?
Upgrade mitmproxy to version 7.0.3 or higher.
Overview
mitmproxy is an interactive, SSL/TLS-capable intercepting proxy with a console interface for HTTP/1, HTTP/2, and WebSockets.
Affected versions of this package are vulnerable to HTTP Request Smuggling. A malicious client or server is able to perform HTTP request smuggling attacks through mitmproxy. This means that a malicious client/server could smuggle a request/response through mitmproxy as part of another request/response's HTTP message body. While mitmproxy would only see one request, the target server would see multiple requests.