PYSEC-2023-74

Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/requests/PYSEC-2023-74.yaml
Aliases
Published
2023-05-26T18:15:00Z
Modified
2023-11-08T04:12:35.436175Z
Details

Requests is a HTTP library. Since Requests 2.3.0, Requests has been leaking Proxy-Authorization headers to destination servers when redirected to an HTTPS endpoint. This is a product of how we use rebuild_proxies to reattach the Proxy-Authorization header to requests. For HTTP connections sent through the tunnel, the proxy will identify the header in the request itself and remove it prior to forwarding to the destination server. However when sent over HTTPS, the Proxy-Authorization header must be sent in the CONNECT request as the proxy has no visibility into the tunneled request. This results in Requests forwarding proxy credentials to the destination server unintentionally, allowing a malicious actor to potentially exfiltrate sensitive information. This issue has been patched in version 2.31.0.

References

Affected packages

PyPI / requests

Package

Name
requests

Affected ranges

Type
GIT
Repo
https://github.com/psf/requests
Events
Introduced
0The exact introduced commit is unknown
Fixed
74ea7cf7a6a27a4eeb2ae24e162bcc942a6706d5
Type
ECOSYSTEM
Events
Introduced
2.3.0
Fixed
2.31.0

Affected versions

2.*

2.3.0
2.4.0
2.4.1
2.4.2
2.4.3
2.5.0
2.5.1
2.5.2
2.5.3
2.6.0
2.6.1
2.6.2
2.7.0
2.8.0
2.8.1
2.9.0
2.9.1
2.9.2
2.10.0
2.11.0
2.11.1
2.12.0
2.12.1
2.12.2
2.12.3
2.12.4
2.12.5
2.13.0
2.14.0
2.14.1
2.14.2
2.15.0
2.15.1
2.16.0
2.16.1
2.16.2
2.16.3
2.16.4
2.16.5
2.17.0
2.17.1
2.17.2
2.17.3
2.18.0
2.18.1
2.18.2
2.18.3
2.18.4
2.19.0
2.19.1
2.20.0
2.20.1
2.21.0
2.22.0
2.23.0
2.24.0
2.25.0
2.25.1
2.26.0
2.27.0
2.27.1
2.28.0
2.28.1
2.28.2
2.29.0
2.30.0