Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS03dndyLWc2cG0tOWhjOM4AA3e0

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

Permalink: https://github.com/advisories/GHSA-7vwr-g6pm-9hc8
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS03dndyLWc2cG0tOWhjOM4AA3e0
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 1 year ago
Updated: about 1 year ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Identifiers: GHSA-7vwr-g6pm-9hc8
References:

• https://github.com/WSH032/fastapi-proxy-lib/security/advisories/GHSA-7vwr-g6pm-9hc8
• https://github.com/WSH032/fastapi-proxy-lib/pull/10
• https://github.com/advisories/GHSA-7vwr-g6pm-9hc8

Repository: https://github.com/WSH032/fastapi-proxy-lib
Blast Radius: 1.0

Affected Packages