Advisories are used to communicate information related to vulnerabilities identified with Autodesk® products and services. This includes any fixes or workarounds that are applicable to the affected product.
Improper Signature Validation Vulnerability in Autodesk® Dynamo BIM
Autodesk ID: ADSK-SA-2020-0001
Product, Service, Component: Autodesk® Dynamo BIM
Impact: Code Execution
Original Publish: 01/04/2020
Last Revised: 01/04/2020
CVSS 3.0 Score
0.1 - 3.9
A vulnerability where scope and impact of exploitation is restricted and the ability to exploit is extremely difficult.
4.0 - 6.9
A vulnerability where exploitation is mitigated by factors such as difficulty to exploit, default configuration or ease of identification.
7.0 - 8.9
A vulnerability, which if exploited, would directly impact the confidentiality, integrity or availability of user’s data or processing resources.
9.0 - 10
A vulnerability, which if exploited, would allow remote execution of malicious code without user action.
Autodesk® Dynamo BIM is affected by an improper signature validation vulnerability which may lead to code execution through maliciously crafted DLL files.
The details of the vulnerability are as follows:
1) CVE-2020-7079: DynamoBIM uses an improper signature validation mechanism when automatically loading official Autodesk feature packages delivered at install time. A certificate issued for one file may be used with a maliciously crafted DLL file to allow it to incorrectly pass the signature check. If a user is tricked into writing such a malicious DLL into the installation area, this may lead to arbitrary code execution on the system. This issue does not affect third-party packages containing executable code that are intentionally installed manually via the Package Manager; third-party packages do not require signature validation, and users should continue to make their own informed decisions about which third-party packages to trust and load on their systems.
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