GHSA-34jh-p97f-mpxf

Source

https://github.com/advisories/GHSA-34jh-p97f-mpxf

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/06/GHSA-34jh-p97f-mpxf/GHSA-34jh-p97f-mpxf.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-34jh-p97f-mpxf

Aliases

CVE-2024-37891

Related

Published

2024-06-17T21:37:20Z

Modified

2024-12-18T22:24:07.021304Z

Severity

4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

urllib3's Proxy-Authorization request header isn't stripped during cross-origin redirects

Details

When using urllib3's proxy support with ProxyManager, the Proxy-Authorization header is only sent to the configured proxy, as expected.

However, when sending HTTP requests without using urllib3's proxy support, it's possible to accidentally configure the Proxy-Authorization header even though it won't have any effect as the request is not using a forwarding proxy or a tunneling proxy. In those cases, urllib3 doesn't treat the Proxy-Authorization HTTP header as one carrying authentication material and thus doesn't strip the header on cross-origin redirects.

Because this is a highly unlikely scenario, we believe the severity of this vulnerability is low for almost all users. Out of an abundance of caution urllib3 will automatically strip the Proxy-Authorization header during cross-origin redirects to avoid the small chance that users are doing this on accident.

Users should use urllib3's proxy support or disable automatic redirects to achieve safe processing of the Proxy-Authorization header, but we still 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:

Setting the Proxy-Authorization header without using urllib3's built-in proxy support.
Not disabling HTTP redirects.
Either not using an HTTPS origin server or for the proxy or target origin to redirect to a malicious origin.

Remediation

Using the Proxy-Authorization header with urllib3's ProxyManager.
Disabling HTTP redirects using redirects=False when sending requests.
Not using the Proxy-Authorization header.

Database specific

{
    "nvd_published_at": "2024-06-17T20:15:13Z",
    "cwe_ids": [
        "CWE-669"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2024-06-17T21:37:20Z"
}

References

Affected packages

PyPI / urllib3

Package

Name: urllib3; View open source insights on deps.dev
Purl: pkg:pypi/urllib3

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.26.19

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

1.26.17

1.26.18

PyPI / urllib3

Package

Name: urllib3; View open source insights on deps.dev
Purl: pkg:pypi/urllib3

Affected ranges

Type: ECOSYSTEM
Events: Introduced

2.0.0

Fixed

2.2.2

Affected versions

2.*

2.0.0

2.0.1

2.0.2

2.0.3

2.0.4

2.0.5

2.0.6

2.0.7

2.1.0

2.2.0

2.2.1