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CVE-2018-25091: Authorization Header forwarded on redirect

October 15, 2023 (updated November 18, 2024)

urllib3 before 1.24.2 does not remove the authorization HTTP header when following a cross-origin redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the authorization header to be exposed to unintended hosts or transmitted in cleartext. NOTE: this issue exists because of an incomplete fix for CVE-2018-20060 (which was case-sensitive).

References

  • github.com/advisories/GHSA-gwvm-45gx-3cf8
  • github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2023-207.yaml
  • github.com/urllib3/urllib3
  • github.com/urllib3/urllib3/commit/adb358f8e06865406d1f05e581a16cbea2136fbc
  • github.com/urllib3/urllib3/compare/1.24.1...1.24.2
  • github.com/urllib3/urllib3/issues/1510
  • nvd.nist.gov/vuln/detail/CVE-2018-25091

Code Behaviors & Features

Detect and mitigate CVE-2018-25091 with GitLab Dependency Scanning

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Affected versions

All versions before 1.24.2

Fixed versions

  • 1.24.2

Solution

Upgrade to version 1.24.2 or above.

Impact 6.1 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

Source file

pypi/urllib3/CVE-2018-25091.yml

Spotted a mistake? Edit the file on GitLab.

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