Autodesk ID: ADSK-SA-2017-001
Product, Service, Component: Autodesk® Backburner 2016
Impact: Denial of Service
Severity: Medium
Original Publish: 17/02/2017
Last Revised: 17/02/2017
| Severity | CVSS Score | Impact |
|---|---|---|
| Low | 0.1 - 3.9 | A vulnerability where scope and impact of exploitation is restricted and the ability to exploit is extremely difficult. |
| Medium | 4.0 - 6.9 | A vulnerability where exploitation is mitigated by factors such as difficulty to exploit, default configuration or ease of identification. |
| High | 7.0 - 8.9 | A vulnerability, which if exploited, would directly impact the confidentiality, integrity or availability of user's data or processing resources. |
| Critical | 9.0 - 10 | A vulnerability, which if exploited, would allow remote execution of malicious code without user action. |
The Autodesk® Backburner 2016 service command line interface accepts a set of remote telnet commands. When insufficient number of arguments are passed, it fails to handle a specific command request which results in an unhandled Null Dereference state/crash leading to Denial of Service condition.
The vulnerability exists in the dynamic link library libdlnrapi30.dll. This .dll is loaded by the Backburner manager.exe file. The service accepts remote telnet commands over TCP port 3234. The application does not properly handle the number of arguments passed to the specific remote command “set {argument} data {xml|list}”. When this command is passed with no arguments it results in a Null Dereference state/crash leading to a Denial of Service condition.
Item: Backburner
Impacted Versions: 2016 and earlier
Mitigated Versions: 2018
Update Source:
Available from Autodesk Exchange App Store: https://apps.autodesk.com
Remediation: Backburner 2018 contains a fix for this vulnerability and is fully compatible with previous versions of Autodesk client applications.Autodesk recommends that customers of the affected product obtain and update to the 2018 version of Backburner available from the Autodesk Exchange App Store. In addition, customers are reminded to review the best known practices for securing internal networks, including firewall and other security protocols, and ensure they have appropriate safeguards in place for interfacing to external networks.
Knowledge of this vulnerability and exploit was first discovered by Autodesk here:https://garage4hackers.com/showthread.php?t=6969Credit to Finder: b0nd (Twitter: @b0ndGarage)
There are previous unresolved reports of this vulnerability. The remediation for Backburner 2018 resolves these issues as well. See CVE-2007-4749, CVE-2016-2344 for details of past issues now resolved.
Revision: 1.0
Date: 17/02/2017
Description: Original published version
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