CVE-2019-11896 Explained : Impact and Mitigation
Learn about CVE-2019-11896, a vulnerability in Bosch Smart Home Controller (SHC) allowing unauthorized apps to gain default permissions. Find mitigation steps and affected versions here.
A vulnerability in the Bosch Smart Home Controller (SHC) before version 9.8.907 allows improper assignment of privileges in the third-party pairing mechanism, potentially enabling a restricted app to gain default app permissions.
Understanding CVE-2019-11896
This CVE involves a security issue in the Bosch Smart Home Controller (SHC) that could lead to privilege escalation.
What is CVE-2019-11896?
The vulnerability in the Bosch Smart Home Controller (SHC) before version 9.8.907 allows unauthorized apps to obtain default app permissions through improper privilege assignment in the third-party pairing mechanism.
The Impact of CVE-2019-11896
This vulnerability could be exploited by an adversary who successfully pairs an app, requiring user interaction, to gain elevated permissions within the Smart Home Controller system.
Technical Details of CVE-2019-11896
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability involves the incorrect assignment of privileges in the third-party pairing mechanism of the Bosch Smart Home Controller (SHC) before version 9.8.907, potentially leading to unauthorized access.
Affected Systems and Versions
- Product: Smart Home Controller
- Vendor: Bosch
- Versions Affected: < 9.8.907 (unspecified/custom)
Exploitation Mechanism
To exploit this vulnerability, an attacker must successfully pair an app, which necessitates user interaction, allowing the unauthorized app to gain default app permissions.
Mitigation and Prevention
Protecting systems from CVE-2019-11896 is crucial to maintaining security.
Immediate Steps to Take
- Update the Bosch Smart Home Controller to version 9.8.907 or higher to mitigate the vulnerability.
- Monitor and restrict third-party app permissions within the Smart Home Controller.
Long-Term Security Practices
- Regularly review and update security configurations on the Smart Home Controller.
- Educate users on safe app pairing practices to prevent unauthorized access.
Patching and Updates
- Stay informed about security updates and patches released by Bosch for the Smart Home Controller.