GHSA-5cph-wvm9-45gj

Source

https://github.com/advisories/GHSA-5cph-wvm9-45gj

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-5cph-wvm9-45gj/GHSA-5cph-wvm9-45gj.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-5cph-wvm9-45gj

Published

2024-11-21T22:21:03Z

Modified

2024-11-21T22:21:03Z

Severity

8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

Flowise OverrideConfig security vulnerability

Details

Impact

Flowise allows developers to inject configuration into the Chainflow during execution through the overrideConfig option. This is supported in both the frontend web integration and the backend Prediction API.

This has a range of fundamental issues that are a major security vulnerability. While this feature is intentional, it should have strong protections added and be disabled by default.

These issues include: 1. Remote code execution. While inside a sandbox this allows for 1. Sandbox escape 2. DoS by crashing the server 3. SSRF 2. Prompt Injection, both System and User 1. Full control over LLM prompts 2. Server variable and data exfiltration And many many more such as altering the flow of a conversation, prompt exfiltration via LLM proxying etc.

These issues are self-targeted and do not persist to other users but do leave the server and business exposed. All issues are shown with the API but also work with the web embed.

Workarounds

overrideConfig should be disabled by default
overrideConfig should have an explicit allow list of variables that are allowed to be modified. This way the user opts-in to where modifications can be made.
vm2 and any forks of it should be removed as in the authors own words, "fixing the vulnerability seems impossible". The recommended replacement is https://www.npmjs.com/package/isolated-vm

Database specific

{
    "nvd_published_at": null,
    "cwe_ids": [
        "CWE-15"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2024-11-21T22:21:03Z"
}

References

Affected packages

npm / flowise

Package

Name: flowise; View open source insights on deps.dev
Purl: pkg:npm/flowise

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.1.4