Horizon Alert
Summary of the vulnerability and why it matters
This advisory concerns a vulnerability in Flowise, a technology used for building conversational AI applications. The issue allows unauthenticated attackers to read and write arbitrary files on the system, which could potentially lead to the execution of malicious code. The primary concern is confirming if this technology is in use and if it is exposed externally.
- Unauthenticated attackers can access and modify system files.
- Critical vulnerability could allow remote code execution.
- Confirm relevance and exposure of Flowise technology.
Attack Path
How an attacker could exploit the issue
An attacker can exploit this vulnerability by sending specially crafted requests to the application's API endpoints. No authentication is required to initiate this attack. The attacker targets the file handling operations within the chatflow functionality, which lack proper validation of the `chatflowId` and `chatId` parameters. By manipulating these parameters with path-traversal sequences, an attacker can gain the ability to write arbitrary files to the server and read any file from the server. This could potentially lead to the execution of arbitrary code.
- No authentication needed.
- Manipulate file parameters.
- Arbitrary file read/write.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could allow an unauthenticated attacker to read or write arbitrary files on the server when specific API endpoints are accessed. This could occur if the application does not properly validate the `chatflowId` and `chatId` parameters.
- Arbitrary file access on the server.
- Exploits path traversal in API requests.
- Potential for remote code execution.
Operational Fix
Recommended remediation, mitigation, and detection steps
The criticality of this arbitrary file access vulnerability in Flowise demands immediate attention from teams managing AI/ML platforms and custom application development. The primary concern is identifying all instances of the affected software, confirming their exposure to the network, and assessing their business criticality. Once these factors are established, the accountable owner can be identified to plan a remediation strategy, which may involve vendor coordination for a fix or implementing temporary risk-reduction measures.
- App owners and platform teams.
- Confirm all Flowise deployments and exposure.
- Plan and execute remediation based on risk.
