Improper authorization control for web services In fastapi-proxy-lib
Description
Cookie leakage between different users in fastapi-proxy-lib
Impact
In the implementation of version 0.0.1, requests from different user clients are processed using a shared httpx.AsyncClient.
However, one oversight is that the httpx.AsyncClient will persistently store cookies based on the set-cookie response header sent by the target server and share these cookies across different user requests.
This results in a cookie leakage issue among all user clients sharing the same httpx.AsyncClient.
Patches
It's fixed in 0.1.0
Workarounds
If you insist 0.0.1:
Do not use ForwardHttpProxy at all.
Do not use ReverseHttpProxy or ReverseWebSocketProxy for any servers that may potentially send a set-cookie response.
However, it's best to upgrade to the latest version.
References
fixed in #10
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Package | Affected version | Patched versions |
|---|---|---|---|
 pypi | 0.1.0 |
Aliases
References