In VBMeta, there is a possible way to modify and resign VBMeta using a test key, assuming the original image was previously signed with the same key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Google Android
cpe:2.3:o:google:android:-:*:*:*:*:*:*:*
|
— | — |