Ecosyste.ms: Advisories

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Security Advisories: GSA_kwCzR0hTQS01Y3BoLXd2bTktNDVnas4ABBnC

Flowise OverrideConfig security vulnerability

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:

Remote code execution. While inside a sandbox this allows for
Sandbox escape
DoS by crashing the server
SSRF
Prompt Injection, both System and User
Full control over LLM prompts
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

Permalink: https://github.com/advisories/GHSA-5cph-wvm9-45gj
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS01Y3BoLXd2bTktNDVnas4ABBnC
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 1 month ago
Updated: about 1 month ago

Identifiers: GHSA-5cph-wvm9-45gj
References:

Repository: https://github.com/FlowiseAI/Flowise
Blast Radius: 0.0

Affected Packages

npm:flowise

Dependent packages: 0
Dependent repositories: 1
Downloads: 10,710 last month
Affected Version Ranges: < 2.1.4
Fixed in: 2.1.4
All affected versions: 1.0.0, 1.0.1, 1.1.0, 1.1.1, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.2.7, 1.2.8, 1.2.9, 1.2.10, 1.2.11, 1.2.12, 1.2.13, 1.2.14, 1.2.15, 1.2.16, 1.3.0, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.3.7, 1.3.8, 1.3.9, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.4.8, 1.4.9, 1.4.10, 1.4.11, 1.4.12, 1.5.0, 1.5.1, 1.6.0, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.6.5, 1.6.6, 1.7.0, 1.7.1, 1.7.2, 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.1.0, 2.1.1, 2.1.2, 2.1.3
All unaffected versions: 2.1.4, 2.1.5, 2.2.0, 2.2.1, 2.2.2, 2.2.3