Authentication Bypass Affecting proxy.py package, versions [,2.3.1)


0.0
high

Snyk CVSS

    Attack Complexity Low
    Integrity High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.16% (52nd percentile)
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NVD
7.5 high

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  • Snyk ID SNYK-PYTHON-PROXYPY-1058919
  • published 11 Jan 2021
  • disclosed 11 Jan 2021
  • credit Unknown

How to fix?

Upgrade proxy.py to version 2.3.1 or higher.

Overview

proxy.py is a ⚡⚡⚡Fast, Lightweight, Pluggable, TLS interception capable proxy server focused on Network monitoring, controls & Application development, testing, debugging.

Affected versions of this package are vulnerable to Authentication Bypass. before_upstream_connection in AuthPlugin in http/proxy/auth.py accepts incorrect Proxy-Authorization header data because of a boolean confusion (and versus or).

References