CVE-2021-39214

Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling) in pypi/mitmproxy

Identifier

CVE-2021-39214

Package Slug

pypi/mitmproxy

Vulnerability

Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)

Description

mitmproxy is an interactive, SSL/TLS-capable intercepting proxy. In mitmproxy, 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 a smuggled request is still captured as part of another request's body, it does not appear in the request list and does not go through the usual mitmproxy event hooks, where users may have implemented custom access control checks or input sanitization. Unless one uses mitmproxy to protect an HTTP/1 service, no action is required.

Affected Versions

All versions up to 7.0.2

Solution

Upgrade to version 7.0.3 or above.

Last Modified

2021-09-30

source