bmad4ever ComfyUI-Bmad-Nodes code injection

Summaryinfo

A vulnerability classified as critical has been found in bmad4ever ComfyUI-Bmad-Nodes. This issue affects the function entrypointBuildColorRangeHSVAdvanced/FilterContour/FindContour. This manipulation causes code injection. The identification of this vulnerability is CVE-2024-21576. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in bmad4ever ComfyUI-Bmad-Nodes (version now known). It has been declared as very critical. Affected by this vulnerability is the function entrypointBuildColorRangeHSVAdvanced/FilterContour/FindContour. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

ComfyUI-Bmad-Nodes is vulnerable to Code Injection. The issue stems from a validation bypass in the BuildColorRangeHSVAdvanced, FilterContour and FindContour custom nodes. In the entrypoint function to each node, there’s a call to eval which can be triggered by generating a workflow that injects a crafted string into the node. This can result in executing arbitrary code on the server.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2024-21576 since 12/22/2023. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/13/2024). The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• bmad4ever

Name

• ComfyUI-Bmad-Nodes

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Entryinfo

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