The InputMethod module has a vulnerability of serialization/deserialization mismatch. Successful exploitation of this vulnerability may cause privilege escalation.
Weakness
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Emui | Huawei | 11.0.1 (including) | 11.0.1 (including) |
| Emui | Huawei | 12.0.0 (including) | 12.0.0 (including) |
| Emui | Huawei | 12.0.1 (including) | 12.0.1 (including) |
| Emui | Huawei | 13.0.0 (including) | 13.0.0 (including) |
| Harmonyos | Huawei | 2.0 (including) | 2.0 (including) |
| Harmonyos | Huawei | 2.0.1 (including) | 2.0.1 (including) |
| Harmonyos | Huawei | 2.1 (including) | 2.1 (including) |
| Harmonyos | Huawei | 3.0.0 (including) | 3.0.0 (including) |
| Harmonyos | Huawei | 3.1.0 (including) | 3.1.0 (including) |
Potential Mitigations
- Make fields transient to protect them from deserialization.
- An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.
Related Attack Patterns
References
- https://consumer.huawei.com/en/support/bulletin/2023/3/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202303-0000001529824505
- https://consumer.huawei.com/en/support/bulletin/2023/3/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202303-0000001529824505