In dump of WindowManagerService.java, there is a possible way of running dumpsys without the required permission due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Weakness
While it is executing, the product sets the permissions of an object in a way that violates the intended permissions that have been specified by the user.
Affected Software
| Name |
Vendor |
Start Version |
End Version |
| Android |
Google |
15.0 (including) |
15.0 (including) |
Potential Mitigations
- Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
- Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
References