McDonalds Self-Service Machine Burger Hamburglar privilege escalation

A vulnerability was found in McDonalds Self-Service Machine (affected version unknown). It has been declared as critical. Affected by this vulnerability is a code block of the component Burger Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability (Hamburglar). The CWE definition for the vulnerability is CWE-269. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 04/08/2019 by Hamburglar Bourne as Free Food from Maccas as confirmed video (Youtube). The advisory is shared at youtu.be. The public release happened without involvement of McDonalds. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/10/2019). Due to its background and reception, this vulnerability has a historic impact.

A public exploit has been developed by Hamburglar Bourne and been published immediately after the advisory. It is declared as proof-of-concept. It is possible to download the exploit at youtu.be. We expect the 0-day to have been worth approximately $5k-$25k.

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

Additional details are provided at mashable.com.

Vendor

• McDonalds

Name

• Self-Service Machine

• ?

• ?

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.9
VulDB Temp Score: 5.6
VulDB Vector: ?
VulDB Reliability: ?

VulDB Base Score: ?
VulDB Temp Score: ?
VulDB Reliability: ?
Class: Privilege escalation / Hamburglar (CWE-269)
Local: Yes
Remote: No

Availability: ?
Access: Public
Status: Proof-of-Concept
Author: Hamburglar Bourne
Download: ?

Price Prediction: ?
Current Price Estimation: ?

Threat Intelligenceinfoedit

Threat: ?
Adversaries: ?
Geopolitics: ?
Economy: ?
Predictions: ?
Remediation: ?Recommended: no mitigation known
0-Day Time: ?
Exploit Delay Time: ?04/08/2019 Advisory disclosed
04/08/2019 +0 days Exploit disclosed
05/10/2019 +32 days VulDB entry created
05/10/2019 +0 days VulDB last updateAdvisory: Free Food from Maccas
Researcher: Hamburglar Bourne
Status: Confirmed
Misc.: ?Created: 05/10/2019 11:39 AM
Complete: ?

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