GHSA-v845-jxx5-vc9f

Suggest an improvement
Source
https://github.com/advisories/GHSA-v845-jxx5-vc9f
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/10/GHSA-v845-jxx5-vc9f/GHSA-v845-jxx5-vc9f.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-v845-jxx5-vc9f
Aliases
Related
Published
2023-10-02T23:27:05Z
Modified
2024-11-18T23:23:04.985873Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • 7.4 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
`Cookie` HTTP header isn't stripped on cross-origin redirects
Details

urllib3 doesn't treat the Cookie HTTP header special or provide any helpers for managing cookies over HTTP, that is the responsibility of the user. However, it is possible for a user to specify a Cookie header and unknowingly leak information via HTTP redirects to a different origin if that user doesn't disable redirects explicitly.

Users must handle redirects themselves instead of relying on urllib3's automatic redirects to achieve safe processing of the Cookie header, thus we decided to strip the header by default in order to further protect users who aren't using the correct approach.

Affected usages

We believe the number of usages affected by this advisory is low. It requires all of the following to be true to be exploited:

  • Using an affected version of urllib3 (patched in v1.26.17 and v2.0.6)
  • Using the Cookie header on requests, which is mostly typical for impersonating a browser.
  • Not disabling HTTP redirects
  • Either not using HTTPS or for the origin server to redirect to a malicious origin.

Remediation

  • Upgrading to at least urllib3 v1.26.17 or v2.0.6
  • Disabling HTTP redirects using redirects=False when sending requests.
  • Not using the Cookie header.
References

Affected packages

PyPI / urllib3

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.0.0
Fixed
2.0.6

Affected versions

2.*

2.0.0
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5

PyPI / urllib3

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.26.17

Affected versions

0.*

0.2
0.3
0.3.1
0.4.0
0.4.1

1.*

1.0
1.0.1
1.0.2
1.1
1.2
1.2.1
1.2.2
1.3
1.4
1.5
1.6
1.7
1.7.1
1.8
1.8.2
1.8.3
1.9
1.9.1
1.10
1.10.1
1.10.2
1.10.3
1.10.4
1.11
1.12
1.13
1.13.1
1.14
1.15
1.15.1
1.16
1.17
1.18
1.18.1
1.19
1.19.1
1.20
1.21
1.21.1
1.22
1.23
1.24
1.24.1
1.24.2
1.24.3
1.25
1.25.1
1.25.2
1.25.3
1.25.4
1.25.5
1.25.6
1.25.7
1.25.8
1.25.9
1.25.10
1.25.11
1.26.0
1.26.1
1.26.2
1.26.3
1.26.4
1.26.5
1.26.6
1.26.7
1.26.8
1.26.9
1.26.10
1.26.11
1.26.12
1.26.13
1.26.14
1.26.15
1.26.16