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GHSA-p36r-qxgx-jq2v

MediumCVSS 5.7 / 10
Published Jun 17, 2024·Last modified Jun 17, 2024
Affected Components(0)

No affected components available

Description

Summary

If an attacker can successfully authenticate through SSO/Access Code, they can obtain the real backend API Key by modifying the base URL to their own attack URL on the frontend and setting up a server-side request.

Details

The attack process is described above.

image

PoC

Frontend:

  1. Pass basic authentication (SSO/Access Code).
  2. Set the Base URL to a private attack address.
  3. Configure the request method to be a server-side request.
  4. At the self-set attack address, retrieve the API Key information from the request headers.

Backend:

  1. The LobeChat version allows setting the Base URL.
  2. There is no outbound traffic whitelist.

Impact

All community version LobeChat users using SSO/Access Code authentication, tested on version 0.162.13.

Risk Scores
Base Score
5.7

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information.

Threat Intelligence
5.2

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.55%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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