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


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.18% (56th percentile)

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  • Snyk IDSNYK-PYTHON-PROXYPY-1058919
  • published11 Jan 2021
  • disclosed11 Jan 2021
  • creditUnknown

Introduced: 11 Jan 2021

CVE-2021-3116  (opens in a new tab)
CWE-287  (opens in a new tab)

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).

CVSS Base Scores

version 3.1