Authentication Bypass Affecting urllib3 package, versions [,1.23)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.5% (77th percentile)

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  • Snyk ID SNYK-PYTHON-URLLIB3-72681
  • published 12 Dec 2018
  • disclosed 11 Dec 2018
  • credit Unknown

How to fix?

Upgrade urllib3 to version 1.23 or higher.

Overview

urllib3 is a HTTP library with thread-safe connection pooling, file post, and more.

Affected versions of this package are vulnerable to Authentication Bypass. It did remove the Authorization HTTP header when following a cross-origin redirect. This can allow for credentials in the Authorization header to be exposed to unintended hosts or transmitted in cleartext.

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
5.9 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    None
  • Availability (A)
    None